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: 'an old fashioned setting of people playing tennis'. Reverse all words of length '6' in the given sentence.

Ex Output:
an old fashioned setting of elpoep playing sinnet


Ex Input:
Sentence: 'a man sitting in a boat with a tv'. Reverse all words of length '7' in the given sentence.

Ex Output:
a man gnittis in a boat with a tv


Ex Input:
Sentence: 'the plate is covered with small donuts with different icings'. Reverse all words of length '7' in the given sentence.

Ex Output:

the plate is derevoc with small donuts with different icings