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: 'small blue and red bird standing on rear of zebra'. Reverse all words of length '8' in the given sentence.

Ex Output:
small blue and red bird gnidnats on rear of zebra


Ex Input:
Sentence: 'people watching a music concert being performed on a stage'. Reverse all words of length '5' in the given sentence.

Ex Output:
people watching a cisum concert gnieb performed on a egats


Ex Input:
Sentence: 'several elephants standing in mud while people watched them from a building on a cliff'. Reverse all words of length '1' in the given sentence.

Ex Output:

several elephants standing in mud while people watched them from a building on a cliff