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

Input: Consider Input: Sentence: 'a shot looks down on a person riding a long board'. Replace the letter 'o' with 'u' in the sentence.

Output: a shut luuks duwn un a persun riding a lung buard


Input: Consider Input: Sentence: 'a little girl is sitting in a suitcase in a library'. Replace the letter 't' with 'l' in the sentence.

Output: a lillle girl is silling in a suilcase in a library


Input: Consider Input: Sentence: 'a tennis player returns the ball with a backhand'. Replace the letter 'p' with 'c' in the sentence.


Output: a tennis clayer returns the ball with a backhand