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

Input: Consider Input: Sentence: 'a man in a field standing as a ball comes through the air towards him'. Replace the letter 'u' with 'j' in the sentence.

Output: a man in a field standing as a ball comes throjgh the air towards him


Input: Consider Input: Sentence: 'a number of people sitting on chairs near each other'. Replace the letter 'c' with 'm' in the sentence.

Output: a number of people sitting on mhairs near eamh other


Input: Consider Input: Sentence: 'a young boy proudly holding a teddy bear'. Replace the letter 'u' with 't' in the sentence.


Output: a yotng boy protdly holding a teddy bear