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index 0000000000000000000000000000000000000000..f4b25dedb9812c083f6216b35f068e2139ea0c3c
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\ No newline at end of file
diff --git a/train/arxiv/arxiv_0006-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0006-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..07db3012f5e17bdb5c7eb88cde24c08fcd506d8a
--- /dev/null
+++ b/train/arxiv/arxiv_0006-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0015-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0015-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..a99f366178ca48717e220a62f9d1fee50c31cadd
--- /dev/null
+++ b/train/arxiv/arxiv_0015-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_0015-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0015-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..e04fe7a62b14fdaa9aa7a2f849cb965031bba777
--- /dev/null
+++ b/train/arxiv/arxiv_0015-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 284300148,
+  "num_truncated_tokens": 283825708
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0017-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0017-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea9622c4f1c47a584a70dc246b75d3a6e57049ce
--- /dev/null
+++ b/train/arxiv/arxiv_0017-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_0017-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0017-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..889ebcba455e53e47d4c6241fc5eb4d2d2118b84
--- /dev/null
+++ b/train/arxiv/arxiv_0017-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 310806392,
+  "num_truncated_tokens": 310291914
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0019-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0019-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..692ecdaf964c9c5952c01a7d24534b5c0d360771
--- /dev/null
+++ b/train/arxiv/arxiv_0019-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_0019-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0019-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..69e9650d26c2714afe8bd8af72bfca47fc7d1755
--- /dev/null
+++ b/train/arxiv/arxiv_0019-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 301777986,
+  "num_truncated_tokens": 301278605
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0033-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0033-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..48883e5a6731c1f6becbe9ad1b221ac40ce6aabf
--- /dev/null
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@@ -0,0 +1 @@
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diff --git a/train/arxiv/arxiv_0033-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0033-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..704beed338d655f15d6627b5a4c08a76f4909f39
--- /dev/null
+++ b/train/arxiv/arxiv_0033-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 319699568
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0042-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0042-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c410061c0b000826e4fdf8fa1cb1f2d08219946
--- /dev/null
+++ b/train/arxiv/arxiv_0042-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_0042-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0042-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..ddd2cc0dc3df9a71718f274ddd186d06a227bb60
--- /dev/null
+++ b/train/arxiv/arxiv_0042-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
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+  "num_truncated_tokens": 296609321
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0044-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0044-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..37cd5a0f59ca18ac77603e2ec66799dd3ee4f41e
--- /dev/null
+++ b/train/arxiv/arxiv_0044-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_0044-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0044-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..d4002e37cd638a4d3360b543c532175c62788295
--- /dev/null
+++ b/train/arxiv/arxiv_0044-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 267992259,
+  "num_truncated_tokens": 267547609
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0049-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0049-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..234b3c01aaccc25a78c02541f3e7fbdc15de36e6
--- /dev/null
+++ b/train/arxiv/arxiv_0049-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_0049-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0049-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..3e879f3d2eb0499333417710d577875f6308439d
--- /dev/null
+++ b/train/arxiv/arxiv_0049-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 248865535,
+  "num_truncated_tokens": 248446902
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0052-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0052-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..a49a98b2062fd5cc4db2e856bddc5f2323030ccc
--- /dev/null
+++ b/train/arxiv/arxiv_0052-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_0052-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0052-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..a9c891a0d41ea8ab349cb3b01bd6eca55c18645a
--- /dev/null
+++ b/train/arxiv/arxiv_0052-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 295385787,
+  "num_truncated_tokens": 294897982
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0062-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0062-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..dc8d8771bf6f70025833728286eaaeba6c4a757d
--- /dev/null
+++ b/train/arxiv/arxiv_0062-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_0062-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0062-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..0141f89c2ec95e158d7b226ec4f5c0c34f586141
--- /dev/null
+++ b/train/arxiv/arxiv_0062-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 322158424,
+  "num_truncated_tokens": 321628332
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0064-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0064-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..b886cfa74225bf57c2ef9a69601d7a64551bbda6
--- /dev/null
+++ b/train/arxiv/arxiv_0064-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 288337718,
+  "num_truncated_tokens": 287860847
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0073-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0073-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..0acf52600dc4e75f08ccd39f208cd06fc9c69686
--- /dev/null
+++ b/train/arxiv/arxiv_0073-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_0073-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0073-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c82409beaffc513fc075d54480b5e7a7d268399
--- /dev/null
+++ b/train/arxiv/arxiv_0073-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 270391337,
+  "num_truncated_tokens": 269940206
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0078-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0078-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..01f971b44d93e7918dceadafaee4a16481b17fde
--- /dev/null
+++ b/train/arxiv/arxiv_0078-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_0078-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0078-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..834b0b477ad495d8dc1064894b610a48bff5b437
--- /dev/null
+++ b/train/arxiv/arxiv_0078-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
@@ -0,0 +1,4 @@
+{
+  "num_tokens": 267307422,
+  "num_truncated_tokens": 266861238
+}
\ No newline at end of file
diff --git a/train/arxiv/arxiv_0098-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/arxiv/arxiv_0098-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..d5c3d2754825772e58b7108b45e937bf64265f42
--- /dev/null
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diff --git a/train/arxiv/arxiv_0098-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json b/train/arxiv/arxiv_0098-tokenized-chunked-1024-512-128-backfill-nodups/num_tokens.json
new file mode 100644
index 0000000000000000000000000000000000000000..7d489c3134448220dbc5b74439520bb944be7a60
--- /dev/null
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diff --git a/train/arxiv/index.json b/train/arxiv/index.json
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diff --git a/train/cc_en_head/cc_en_head_0047-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/cc_en_head/cc_en_head_0047-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..76988becff3587c72b04e248233106b297f5d142
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+++ b/train/cc_en_head/cc_en_head_0047-tokenized-chunked-1024-512-128-backfill-nodups/index.json
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diff --git a/train/cc_en_head/cc_en_head_0095-tokenized-chunked-1024-512-128-backfill-nodups/index.json b/train/cc_en_head/cc_en_head_0095-tokenized-chunked-1024-512-128-backfill-nodups/index.json
new file mode 100644
index 0000000000000000000000000000000000000000..54df827dfdad2adaf9e44f6a56d5260c5f592f6b
--- /dev/null
+++ b/train/cc_en_head/cc_en_head_0095-tokenized-chunked-1024-512-128-backfill-nodups/index.json
@@ -0,0 +1 @@
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