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:
A resd double decker metro bus rounds the corner of a city street.

Ex Output:
resd


Ex Input:
A colse up a cell phone in someone's hand

Ex Output:
colse


Ex Input:
A women obn a busy street carrying a metal bowl full of ripe plantains on her head.

Ex Output:

obn