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Problems

Previous and next letter

Previous and next letter

Given letter of English alphabet. Print its previous and next letter.

Input

One letter с ('A' < c < 'Z' or 'a' < c < 'z') of English alphabet (lowercase or uppercase).

Output

Print the letter before c and then letter after c in English alphabet (lowercase or uppercase correspondingly).

Time limit 1 second
Memory limit 128 MiB
Input example #1
D
Output example #1
C E
Input example #2
x
Output example #2
w y