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diff --git a/train/arxiv/arxiv_0000-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0000-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..285c523028ea73dc048e0316047f387759f39888
--- /dev/null
+++ b/train/arxiv/arxiv_0000-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 240302451
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae1bcc9bb3748b31019f083118dcbe83707ae627
--- /dev/null
+++ b/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/index.json
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diff --git a/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..64319591c96a9c37102cb923a056a3d5a1637421
--- /dev/null
+++ b/train/arxiv/arxiv_0005-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 283105855
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0013-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0013-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..cbd60d20632ae5125c8f8abaef89f56244f46b54
--- /dev/null
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@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0013-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0013-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..6cd84746ebb2e233179727e10f1e4fd409aeed9f
--- /dev/null
+++ b/train/arxiv/arxiv_0013-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 260188177
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0030-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0030-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..c99f8b164da1fea13e66cfb24cbf74bfb7940a29
--- /dev/null
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@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0030-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0030-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..afa582557aefe8d024abe821f3d7e36f860d4b69
--- /dev/null
+++ b/train/arxiv/arxiv_0030-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 348022949,
+  "num_truncated_tokens": 347450115
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0031-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0031-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..78d9a6ef2054597b3697e1c6f27433942f0eeb74
--- /dev/null
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diff --git a/train/arxiv/arxiv_0031-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0031-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..fd36f09156b5cc5dfe9c19f014e019c6b6667a7b
--- /dev/null
+++ b/train/arxiv/arxiv_0031-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 249133803
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..d8742875e02ef594cdfb71906a43dd348b1f7409
--- /dev/null
+++ b/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/index.json
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..12eb5863c76790e117e0c10bb7fcae8e17b31ba0
--- /dev/null
+++ b/train/arxiv/arxiv_0034-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 333944549,
+  "num_truncated_tokens": 333393040
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..a8d41461461edd30396a7bb827f29ef9e1bb2584
--- /dev/null
+++ b/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/index.json
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..808a6810f6e428ef5463554afc6c88155bc20ea7
--- /dev/null
+++ b/train/arxiv/arxiv_0035-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 289677671,
+  "num_truncated_tokens": 289194356
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..9b8f7adb92816e938ad80931017069b40c5f0d65
--- /dev/null
+++ b/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ccfe5d17c9e784d39e89c7e8e71dcec8f08b492
--- /dev/null
+++ b/train/arxiv/arxiv_0036-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 257387320
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0039-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0039-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..b5b9c54b3a090996e2b7bd06752ae2caadc7f1b2
--- /dev/null
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@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0039-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0039-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ea2cbc26c708629afa3ce224dd7686905397e97
--- /dev/null
+++ b/train/arxiv/arxiv_0039-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 279931568
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..10f06544a4757541abac0be18118ef9f341400e9
--- /dev/null
+++ b/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..aaa794f36f720f52841a25fedebcd2780ca7d8ee
--- /dev/null
+++ b/train/arxiv/arxiv_0043-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 308852170
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..2eab76f744b8f25b890fc776b6b7885c43bcb876
--- /dev/null
+++ b/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..00975c5c185c8fa4212048ff66d409e839e39951
--- /dev/null
+++ b/train/arxiv/arxiv_0057-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 281302335,
+  "num_truncated_tokens": 280829549
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..d17e9362adf85eba5e43748d7c870538706488ed
--- /dev/null
+++ b/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..7113cfe561f5d153c5c2efb5145fe91e433adbe9
--- /dev/null
+++ b/train/arxiv/arxiv_0059-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 291273851,
+  "num_truncated_tokens": 290787071
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0069-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0069-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..954883d9060e1057eb7aa21ad39d8c8c2cf8da2f
--- /dev/null
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0069-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0069-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..e0fce03d505f3d5c773a92b074096b48d7d9a997
--- /dev/null
+++ b/train/arxiv/arxiv_0069-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 287833636
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..bfc6dec3331d45f7234e675cdf23f67295cff7ee
--- /dev/null
+++ b/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..76ac525753f8f874b45739465c03befa461037ed
--- /dev/null
+++ b/train/arxiv/arxiv_0070-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 216583991
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..99e5900d7faf4e89d597fa5c4dc1cd0700b0a688
--- /dev/null
+++ b/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..d1c1098ee434233762a81223fe8f1e60cd5d0e8f
--- /dev/null
+++ b/train/arxiv/arxiv_0072-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 330322047,
+  "num_truncated_tokens": 329772285
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..cd1874047e1468e518dc491011f138d9fe3941e5
--- /dev/null
+++ b/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..a3d81677276df0dda740e30bf99ee55a724a1c77
--- /dev/null
+++ b/train/arxiv/arxiv_0077-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 285230689,
+  "num_truncated_tokens": 284757306
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0086-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0086-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..f7e137d422f34abd292385487094b74eefe2e3ee
--- /dev/null
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