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: 'this railway is lit up very well this evening'. Reverse all words of length '2' in the given sentence.

Ex Output:
this railway si lit pu very well this evening


Ex Input:
Sentence: 'a man sitting at a table in front of a plate of food'. Reverse all words of length '7' in the given sentence.

Ex Output:

a man gnittis at a table in front of a plate of food