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

Input: Consider Input: Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.

Output: a bunsh of signs on a pole on the street


Input: Consider Input: Sentence: 'three colorful knit bear toys with button eyes'. Replace the letter 'r' with 'z' in the sentence.

Output: thzee colozful knit beaz toys with button eyes


Input: Consider Input: Sentence: 'a bathroom counter filled with three sinks under mirrors'. Replace the letter 't' with 'y' in the sentence.


Output: a bayhroom counyer filled wiyh yhree sinks under mirrors