AT_abc419_a [ABC419A] AtCoder Language

Takahashi is learning AtCoderish Language. He memorizes AtCoderish words corresponding to English words. He knows that `red`, `blue`, and `green` in English respectively correspond to `SSS`, `FFF`, and `MMM` in AtCoderish, and he knows no other words. You are given a string $ S $ consisting of lowercase English letters. If $ S $ equals an English word that Takahashi knows corresponds to an AtCoderish word, output the AtCoderish word corresponding to $ S $ ; otherwise, output the string `Unknown`.

The input is given from Standard Input in the following format: > $ S $

Output a string according to the instructions in the problem statement.

### Sample Explanation 1 `red` in English corresponds to `SSS` in AtCoderish. ### Constraints - $ S $ is a string of length between $ 1 $ and $ 10 $ , inclusive, consisting of English letters.