Clearly, the given arrangement is as under :
In the first step, the first three and the last three letters are written in a reverse order.
Then, the first four and the last three letters are written in a reverse order.
The process is repeated to obtain successive output steps.
First batch : rate go long top we let have
Second batch : long go rate top have let we
Third batch : top rate go long we let have
Fourth batch : go rate top long have let we