Which step will be the last step of an input for which the third step is "91 go 28 mock per 43 lead 37?

In the given word and number arrangement machine. numbers are arranged alternately with words. Among numbers, first the largest number is taken to the leftmost side, then the smallest and so on. Among word, the first word as per the alphabetical order is taken to the leftmost side, then the word coming last as per the alphabetical order and so on.
Step III : 91 go 28 mock per 43 lead 37
Step IV : 91 go 28 per mock 43 lead 37
Step V : 91 go 28 per 43 mock lead 37
Step VI : 91 go 28 per 43 lead mock 37
Step VII : 91 go 28 per 43 lead 37 mock