If step IV of an input is ‘scripted are himself both films Amit by’, which of the following would be step I of that input?

It is clear that machine is arranging the words of the input neither on the basis of no. of letters in each word nor alphabetical nor change in position in a fixed pattern. But after a keen watch on the last step we find that the last letter of each word is in alphabetical order. Now, it can be found that the word whose last letter comes first in English alphabet becomes first and the rest shift one position rightward. Now the word with last letter just after the last letter of the arranged word as in English alphabet becomes second and the rest shift one position rightward and so on.