TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'street signs hanging next to a traffic light on a city street'. Replace the letter 'g' with 'm' in the sentence.

SOLUTION: street simns hanminm next to a traffic limht on a city street

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

SOLUTION: a box of a dozen doughnuts aii varieties

PROBLEM: Sentence: 'the small bathroom has a toilet and a bidet'. Replace the letter 'h' with 'p' in the sentence.

SOLUTION:
tpe small batproom pas a toilet and a bidet