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

Input: Consider Input: Sentence: 'vita mix blender with something in it already blended'. Replace the letter 'b' with 'a' in the sentence.

Output: vita mix alender with something in it already alended


Input: Consider Input: Sentence: 'an old rusty car sits outside of an old building'. Replace the letter 'o' with 'r' in the sentence.

Output: an rld rusty car sits rutside rf an rld building


Input: Consider Input: Sentence: 'a man riding skis down a snow covered ski slope'. Replace the letter 'o' with 'c' in the sentence.


Output: a man riding skis dcwn a sncw ccvered ski slcpe