Directions: Read the given information carefully and answer the following questions.

If in the given word 'NEUROPATHY', all the letters which appear before Q in the alphabetical series are replaced by the next letter, and all the letters which appear after Q in the alphabetical series are replaced by the previous letter according to the English alphabetical series and all the letters are arranged in ascending order from left to right according to alphabetical order after eliminating all the vowels and the letters which are repeated, then which letter which appears fourth from the right end?