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

Sentence: 'a crooked street sign on a damaged sidewalk'. Replace the letter 'm' with 'u' in the sentence.
a crooked street sign on a dauaged sidewalk

Sentence: 'a man is standing at the base ball triangle with bat in tow'. Replace the letter 'n' with 'c' in the sentence.
a mac is stacdicg at the base ball triacgle with bat ic tow

Sentence: 'the corner of a building with a street sign attached'. Replace the letter 'c' with 'y' in the sentence.
the yorner of a building with a street sign attayhed