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: 'airplane flying in front of mountains and clouds'. Reverse all words of length '2' in the given sentence.

Ex Output:
airplane flying ni front fo mountains and clouds


Ex Input:
Sentence: 'a skateboarder in mid air during a trick'. Reverse all words of length '6' in the given sentence.

Ex Output:
a skateboarder in mid air gnirud a trick


Ex Input:
Sentence: 'a couple of motorcycles are parked together'. Reverse all words of length '1' in the given sentence.

Ex Output:

a couple of motorcycles are parked together