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

Input: Consider Input: Sentence: 'a group of small children sitting at a table in front of a pizza'. Replace the letter 'r' with 'd' in the sentence.

Output: a gdoup of small childden sitting at a table in fdont of a pizza


Input: Consider Input: Sentence: 'a man standing next to a parking meter'. Replace the letter 'n' with 'p' in the sentence.

Output: a map stapdipg pext to a parkipg meter


Input: Consider Input: Sentence: 'a couple of cats on the ground in a room'. Replace the letter 'a' with 'p' in the sentence.


Output: p couple of cpts on the ground in p room