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 group of sheep graze in a grassy field'. Reverse all words of length '2' in the given sentence.

Ex Output:
a group fo sheep graze ni a grassy field


Ex Input:
Sentence: 'a man wearing a vest and tie posing for the camera'. Reverse all words of length '1' in the given sentence.

Ex Output:
a man wearing a vest and tie posing for the camera


Ex Input:
Sentence: 'a boy playing with a tennis raquet and a ball'. Reverse all words of length '7' in the given sentence.

Ex Output:

a boy gniyalp with a tennis raquet and a ball