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: 'four cute little ducklings swimming in the water'. Reverse all words of length '6' in the given sentence.

Ex Output:
four cute elttil ducklings swimming in the water


Ex Input:
Sentence: 'a wall decorated with fans and other art work'. Reverse all words of length '1' in the given sentence.

Ex Output:
a wall decorated with fans and other art work


Ex Input:
Sentence: 'a couple of little girls standing next to each other'. Reverse all words of length '8' in the given sentence.

Ex Output:

a couple of little girls gnidnats next to each other