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

Sentence: 'a hand held game or older cell phone'. Replace the letter 'o' with 'c' in the sentence.
a hand held game cr clder cell phcne

Sentence: 'a small bird perched on a open window'. Replace the letter 'e' with 'r' in the sentence.
a small bird prrchrd on a oprn window

Sentence: 'a skateboarder is jumping with his arms extended in the air'. Replace the letter 't' with 's' in the sentence.

a skaseboarder is jumping wish his arms exsended in she air