original: Initially the units were coupled cab-to-cab but it was found more practical to couple Master nose to Slave cab.
simplifications: The units were coupled cab-to-cab but it was found more practical to couple Master nose to Slave cab. At first the units were joined cab-to cab. It was found more useful to join them nose to cab. At first the units were cab-to-cab but later it was found more useful to use them - Master nose to Slave cab. The units were together cab-to-cab at first. It was considered more practical to join master to nose cab. The units were first coupled cab-to-cab. However, it was found more practical to couple Master nose to Slave cab. First the units were coupled cab-to-cab. Then it was more practical to couple Master nose to Slave cab. At first the units were paired cab-to-cab but it was found to be better to pair Master nose to Slave cab. The units were coupled cab-to-cab originally. This changed when they noticed it was more practical to couple Master nose to Slave cab. First, the units were hooked cab-to-cab but it was more workable to hook Master nose to Slave cab. At first, the units have been coupled cab-to-cab, but it was more practical to couple the Master nose to the Slave cab.