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

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: 'black and white image of a tattoo and piercing sign in a city'. Replace the letter 'e' with 'h' in the sentence.

Output: black and whith imagh of a tattoo and pihrcing sign in a city


Input: Consider Input: Sentence: 'a blue train driving in front of a red and white train'. Replace the letter 'h' with 'a' in the sentence.


Output: a blue train driving in front of a red and waite train