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

Input: Consider Input: Sentence: 'group playing frisbee with runners in grassy field'. Replace the letter 'l' with 'q' in the sentence.

Output: group pqaying frisbee with runners in grassy fieqd


Input: Consider Input: Sentence: 'a yellow street sign sitting on the side of a road'. Replace the letter 'a' with 'd' in the sentence.

Output: d yellow street sign sitting on the side of d rodd


Input: Consider Input: Sentence: 'a very tall clock tower towering over a building'. Replace the letter 't' with 'u' in the sentence.


Output: a very uall clock uower uowering over a building