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

Input: Consider Input: Sentence: 'a few zebras that are next to each other'. Replace the letter 'o' with 'u' in the sentence.

Output: a few zebras that are next tu each uther


Input: Consider Input: Sentence: 'giraffe standing on a pile of rocks reaching up to a branch with its mouth'. Replace the letter 'g' with 'n' in the sentence.

Output: niraffe standinn on a pile of rocks reachinn up to a branch with its mouth


Input: Consider Input: Sentence: 'a small red boat is out on the water'. Replace the letter 'm' with 'v' in the sentence.


Output: a svall red boat is out on the water