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 skiers standing at the base of a mountain'. Reverse all words of length '3' in the given sentence.

Ex Output:
a group of skiers standing at eht base of a mountain


Ex Input:
Sentence: 'two doubledecker buses are parked at a bus stop next to some buildings with another doubledecker bus on the road going the other direction behind them'. Reverse all words of length '1' in the given sentence.

Ex Output:
two doubledecker buses are parked at a bus stop next to some buildings with another doubledecker bus on the road going the other direction behind them


Ex Input:
Sentence: 'a large elephant wearing a red costume covered in purple lights'. Reverse all words of length '3' in the given sentence.

Ex Output:

a large elephant wearing a der costume covered in purple lights