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

Input: Consider Input: Sentence: 'a study table with computer, mouse and keyboard .photo frame are also kept'. Replace the letter 'u' with 'q' in the sentence.

Output: a stqdy table with compqter, moqse and keyboard .photo frame are also kept


Input: Consider Input: Sentence: 'a bunch of signs on a pole on the street'. Replace the letter 'c' with 's' in the sentence.

Output: a bunsh of signs on a pole on the street


Input: Consider Input: Sentence: 'a cup, saucer and spoon sitting next to a newspaper'. Replace the letter 's' with 'y' in the sentence.


Output: a cup, yaucer and ypoon yitting next to a newypaper