In this task, you need to replace a letter in the sentence with another given letter.

Input: Consider Input: Sentence: 'a building has a clock on the top of it'. Replace the letter 'l' with 'x' in the sentence.

Output: a buixding has a cxock on the top of it


Input: Consider Input: Sentence: 'there are peoople standign next to a bike'. Replace the letter 'o' with 't' in the sentence.

Output: there are pettple standign next tt a bike


Input: Consider Input: Sentence: 'two cats are laying in the chair sleeping'. Replace the letter 'i' with 'l' in the sentence.


Output: two cats are laylng ln the chalr sleeplng