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

Input: Consider Input: Sentence: 'a group of people walking along a dirty snow covered road'. Replace the letter 'n' with 'i' in the sentence.

Output: a group of people walkiig aloig a dirty siow covered road


Input: Consider Input: Sentence: 'a broken suitcase on a small tile floor with the contents exposed'. Replace the letter 'u' with 'z' in the sentence.

Output: a broken szitcase on a small tile floor with the contents exposed


Input: Consider Input: Sentence: 'an electric train traveling down a countryside rail'. Replace the letter 'r' with 'f' in the sentence.


Output: an electfic tfain tfaveling down a countfyside fail