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

Input: Consider Input: Sentence: 'a woman gives a thumbs up sign while sitting in front of a sandwich'. Replace the letter 's' with 'h' in the sentence.

Output: a woman giveh a thumbh up hign while hitting in front of a handwich


Input: Consider Input: Sentence: 'a cat is watching a computer with a video of a cat'. Replace the letter 't' with 'a' in the sentence.

Output: a caa is waaching a compuaer wiah a video of a caa


Input: Consider Input: Sentence: 'a woman is touching the buttons on a microwave'. Replace the letter 'c' with 'k' in the sentence.


Output: a woman is toukhing the buttons on a mikrowave