The given sentence contains a typo which could be one of the following four types: (1) swapped letters of a word e.g. 'niec' is a typo of the word 'nice'. (2) missing letter in a word e.g. 'nic' is a typo of the word 'nice'. (3) extra letter in a word e.g. 'nicce' is a typo of the word 'nice'. (4) replaced letter in a word e.g 'nicr' is a typo of the word 'nice'. You need to identify the typo in the given sentence. To do this, answer with the word containing the typo.

Input: Consider Input: Two xcats that are sitting near a window.

Output: xcats


Input: Consider Input: A vey tall giraffe in a big grassy field.

Output: vey


Input: Consider Input: A man and his dog are on a field with a crowd watching the dog standing up holding onto the fribsee.


Output: fribsee.