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.

Q: Thias is a beautiful picture of a city at sun set.

A: Thias
****
Q: A re-crested wood-pecker on a lichen covered tree.

A: re-crested
****
Q: A bicycle leaning against a tree off a riverbakn.

A:
riverbakn.
****