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: 'an elephant is standing in the road by the truck'. Reverse all words of length '5' in the given sentence.

Ex Output:
an elephant is standing in the road by the kcurt


Ex Input:
Sentence: 'grown black cat sitting in a blue chair in a living room'. Reverse all words of length '4' in the given sentence.

Ex Output:
grown black cat sitting in a eulb chair in a living moor


Ex Input:
Sentence: 'three people in uniform are cutting a cake'. Reverse all words of length '4' in the given sentence.

Ex Output:

three people in uniform are cutting a ekac