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

Input: Consider Input: Sentence: 'a couple of kids with rackets on a court'. Replace the letter 'u' with 'd' in the sentence.

Output: a codple of kids with rackets on a codrt


Input: Consider Input: Sentence: 'a boy on the beach playing with a frisbee'. Replace the letter 'h' with 'e' in the sentence.

Output: a boy on tee beace playing wite a frisbee


Input: Consider Input: Sentence: 'a black and white cat rests in the middle of an unmade bed'. Replace the letter 't' with 'b' in the sentence.


Output: a black and whibe cab resbs in bhe middle of an unmade bed