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: 'reflection of window on mirror in dark bathroom'. Reverse all words of length '10' in the given sentence.

Ex Output:
noitcelfer of window on mirror in dark bathroom


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: 'a train is driving down the tracks in front of a building'. Reverse all words of length '3' in the given sentence.

Ex Output:

a train is driving down eht tracks in front of a building