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

Input: Consider Input: Sentence: 'a teddy bear playing a drum and a teddy bear playing a guitar'. Replace the letter 'd' with 'm' in the sentence.

Output: a temmy bear playing a mrum anm a temmy bear playing a guitar


Input: Consider Input: Sentence: 'there is a stepladder situated over a toilet'. Replace the letter 'r' with 'x' in the sentence.

Output: thexe is a stepladdex situated ovex a toilet


Input: Consider Input: Sentence: 'a person is cooking some vegetables in the kitchen'. Replace the letter 'v' with 's' in the sentence.


Output: a person is cooking some segetables in the kitchen