TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a zebra patterned set of hair brushes sitting on each other'. Replace the letter 'r' with 'a' in the sentence.

SOLUTION: a zebaa patteaned set of haia baushes sitting on each othea

PROBLEM: Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.

SOLUTION: stone and white coloped stpuctupe in fpont of white modepn building

PROBLEM: Sentence: 'a series of remotes for various electronic devices'. Replace the letter 'f' with 'z' in the sentence.

SOLUTION:
a series oz remotes zor various electronic devices