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

Ex Input:
Sentence: 'a box of a dozen doughnuts all varieties'. Replace the letter 'l' with 'i' in the sentence.

Ex Output:
a box of a dozen doughnuts aii varieties


Ex Input:
Sentence: 'a chinese entree displayed on a red plate'. Replace the letter 'n' with 'z' in the sentence.

Ex Output:
a chizese eztree displayed oz a red plate


Ex Input:
Sentence: 'a little girl in the bed with two teddy bears'. Replace the letter 'e' with 'h' in the sentence.

Ex Output:

a littlh girl in thh bhd with two thddy bhars