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: A steeet sign that is mounted to the side of a building.

Output: steeet


Input: Consider Input: Nutritious pizza with toppings of egg and broccoli are kept in plares.

Output: plares.


Input: Consider Input: A male suefer is laying on his board while a female surfer takes a squat position.


Output: suefer