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

Input: Consider Input: Sentence: 'a group of people hanging around holding umbrellas'. Replace the letter 'p' with 'f' in the sentence.

Output: a grouf of feofle hanging around holding umbrellas


Input: Consider Input: Sentence: 'an airplane moves through the skies above a snowy mountain range'. Replace the letter 'l' with 's' in the sentence.

Output: an airpsane moves through the skies above a snowy mountain range


Input: Consider Input: Sentence: 'a box contains a dozen assorted large doughnuts'. Replace the letter 'o' with 'p' in the sentence.


Output: a bpx cpntains a dpzen assprted large dpughnuts