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 group of three men are looking at a motorcycle'. Reverse all words of length '2' in the given sentence.

Ex Output:
a group fo three men are looking ta a motorcycle


Ex Input:
Sentence: 'a man leans down to take a bite from his sandwich'. Reverse all words of length '5' in the given sentence.

Ex Output:
a man snael down to take a bite from his sandwich


Ex Input:
Sentence: 'a professional tennis player holding a tennis racket at the us open'. Reverse all words of length '6' in the given sentence.

Ex Output:

a professional sinnet reyalp holding a sinnet tekcar at the us open