In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.

Ex Input:
Sentence: 'a person on a surfboard riding a wave in the water'. Reverse all words of length '5' in the given sentence.

Ex Output:
a person on a surfboard riding a wave in the retaw


Ex Input:
Sentence: 'there are two men sitting on a park bench'. Reverse all words of length '5' in the given sentence.

Ex Output:
ereht are two men sitting on a park hcneb


Ex Input:
Sentence: 'this is a boy riding a skateboard in the park'. Reverse all words of length '6' in the given sentence.

Ex Output:

this is a boy gnidir a skateboard in the park