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.

Ex Input:
Livong room area with large window behind couch.

Ex Output:
Livong


Ex Input:
Large black dog sticking his face in a duffel bag.

Ex Output:
duffel


Ex Input:
A small grassy hill with three sheep at the top and a fence along the ide.

Ex Output:

ide.