Valid Word Checker

Given a word, determine whether it is valid. A word is considered valid if it meets the following conditions:

• It contains only alphabetical letters (both uppercase and lowercase are allowed).
• It does not have three consecutive letters in increasing or decreasing order. In mathematical terms, there should be no indices i such that either $$word[i+1]=word[i]+1\quad\text{and}\quad word[i+2]=word[i]+2$$ or $$word[i+1]=word[i]-1\quad\text{and}\quad word[i+2]=word[i]-2.$$

The input will be read from standard input (stdin) and the output should be printed to standard output (stdout) as either True or False based on the validity of the word.

inputFormat

The input consists of a single line containing a string. The string represents the word you need to check.

Example:

ABC

outputFormat

Output a single line: True if the word is valid, or False otherwise.

Example:

False

## sample

ABC

False