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

Sentence: 'a zebra patterned set of hair brushes sitting on each other'. Replace the letter 'r' with 'a' in the sentence.
a zebaa patteaned set of haia baushes sitting on each othea

Sentence: 'a pair of planes in an airport lot parked for boarding and exiting'. Replace the letter 'e' with 'o' in the sentence.
a pair of planos in an airport lot parkod for boarding and oxiting

Sentence: 'a dark shot of a building on a street at night'. Replace the letter 'b' with 'r' in the sentence.
a dark shot of a ruilding on a street at night