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

Ex Input:
Sentence: 'street sign titled kittery maine state line in green'. Replace the letter 'e' with 'r' in the sentence.

Ex Output:
strrrt sign titlrd kittrry mainr statr linr in grrrn


Ex Input:
Sentence: 'a couple of giraffe standing next to each other'. Replace the letter 't' with 'c' in the sentence.

Ex Output:
a couple of giraffe scanding nexc co each ocher


Ex Input:
Sentence: 'a man sitting at a table and using his laptop'. Replace the letter 'd' with 'o' in the sentence.

Ex Output:

a man sitting at a table ano using his laptop