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

Input: Consider Input: Sentence: 'people wait for a train on a snowy sidewalk'. Replace the letter 'n' with 'm' in the sentence.

Output: people wait for a traim om a smowy sidewalk


Input: Consider Input: Sentence: 'two tennis players shaking hands over the net'. Replace the letter 'n' with 'f' in the sentence.

Output: two teffis players shakifg hafds over the fet


Input: Consider Input: Sentence: 'someone laying in the grass beside a frisbee'. Replace the letter 'e' with 'n' in the sentence.


Output: somnonn laying in thn grass bnsidn a frisbnn