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 grey cat with green eyes looking straight ahead'. Reverse all words of length '1' in the given sentence.

Ex Output:
a grey cat with green eyes looking straight ahead


Ex Input:
Sentence: 'a man skateboards in a park for skateboarding'. Reverse all words of length '2' in the given sentence.

Ex Output:
a man skateboards ni a park for skateboarding


Ex Input:
Sentence: 'a group of four people riding skis while holding ski poles'. Reverse all words of length '3' in the given sentence.

Ex Output:

a group of four people riding skis while holding iks poles