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

Input: Consider Input: Sentence: 'a couple of giraffes eat some food out of a trey'. Replace the letter 'f' with 'e' in the sentence.

Output: a couple oe giraeees eat some eood out oe a trey


Input: Consider Input: Sentence: 'a geoup of people on bicycles coming down a street'. Replace the letter 'i' with 'x' in the sentence.

Output: a geoup of people on bxcycles comxng down a street


Input: Consider Input: Sentence: 'stuffed bears hang in rows in a display'. Replace the letter 's' with 'e' in the sentence.


Output: etuffed beare hang in rowe in a dieplay