#P1145F. Neat Words

Neat Words

No submission language available for this problem.

Description

The input consists of a single string of uppercase letters A-Z. The length of the string is between 1 and 10 characters, inclusive.

Output "YES" or "NO".

Input

The input consists of a single string of uppercase letters A-Z. The length of the string is between 1 and 10 characters, inclusive.

Output

Output "YES" or "NO".

Samples

NEAT
YES
WORD
NO
CODER
NO
APRILFOOL
NO
AI
YES
JUROR
YES
YES
NO