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: 'two young boys standing on grass near a fence'. Reverse all words of length '8' in the given sentence.

Ex Output:
two young boys gnidnats on grass near a fence


Ex Input:
Sentence: 'a man sitting at a table and looking past the microphone'. Reverse all words of length '4' in the given sentence.

Ex Output:
a man sitting at a table and looking tsap the microphone


Ex Input:
Sentence: 'stocky horse is standing in the middle of a fenced area'. Reverse all words of length '6' in the given sentence.

Ex Output:

ykcots horse is standing in the elddim of a decnef area