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

Input: Consider Input: Sentence: 'traffic congestion with cars and an electric tram'. Replace the letter 'a' with 'k' in the sentence.

Output: trkffic congestion with ckrs knd kn electric trkm


Input: Consider Input: Sentence: 'a formal dinning room in a stately manor'. Replace the letter 'n' with 'o' in the sentence.

Output: a formal diooiog room io a stately maoor


Input: Consider Input: Sentence: 'surfers in the ocean with the rolling waves'. Replace the letter 'n' with 'v' in the sentence.


Output: surfers iv the oceav with the rollivg waves