Direction Prakash creates a “List 1” of alphabets starting from A to Z, in that sequence. He then creates a “List 2” from List 1 by swapping the 1st and 14th letters, 2nd and 15th letters, and so on. He then creates a third “List 3” from list 2 such that all letters at odd positions are swapped with letters at even positions (from left to right); after which each vowel is replaced by the consonant just preceding it.