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

Input: Consider Input: Sentence: 'a group of sheep is standing in a grassy field'. Replace the letter 'g' with 'p' in the sentence.

Output: a proup of sheep is standinp in a prassy field


Input: Consider Input: Sentence: 'lose up of various trays of croissants and muffins'. Replace the letter 'n' with 'f' in the sentence.

Output: lose up of various trays of croissafts afd muffifs


Input: Consider Input: Sentence: 'two giraffes move around in an enclosure next to some trees'. Replace the letter 't' with 'g' in the sentence.


Output: gwo giraffes move around in an enclosure nexg go some grees