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

Input: Consider Input: Sentence: 'a gray and white cat sleeping on top of a laptop computer'. Replace the letter 'l' with 'g' in the sentence.

Output: a gray and white cat sgeeping on top of a gaptop computer


Input: Consider Input: Sentence: 'a giraffe walking in its natural habitat on the savannah'. Replace the letter 't' with 'u' in the sentence.

Output: a giraffe walking in ius nauural habiuau on uhe savannah


Input: Consider Input: Sentence: 'white sunglasses sitting on top of a laptop'. Replace the letter 't' with 'd' in the sentence.


Output: whide sunglasses sidding on dop of a lapdop