Shift Three Letters

Given a string s, transform it by shifting each letter by 3 positions in the alphabet. The shifting is performed cyclically, that is, for lowercase letters, each letter \( c \) is transformed to \( c' = (c - 'a' + 3) \mod 26 + 'a' \), and similarly for uppercase letters with \( c' = (c - 'A' + 3) \mod 26 + 'A' \). Non-letter characters remain unchanged.

For example, the input abc transforms to def and xyz transforms to abc. Your program should read the input from standard input (stdin) and output the result to standard output (stdout).

inputFormat

The input consists of a single line string which may include letters, digits, spaces, and other characters.

outputFormat

Output a single string after applying the transformation as described.

abc

def