Password Translation

Problem Description

During the transmission of intelligence, to prevent interception, the message is often encrypted in some way. A simple encryption algorithm cannot fully prevent decryption, but it still stops the message from being easily recognised. We give a simplest encryption method: for a given string, replace each letter from a–y or A–Y with its successor letter, and replace z and Z with a and A respectively; all other non-letter characters remain unchanged, yielding a simple encrypted string.

Input Format

One line containing a string of fewer than $80$ characters.

Output Format

Output the encrypted string of the line.

Sample Input

Hello! How are you!

Sample Output

Ifmmp! Ipx bsf zpv!