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: 'young calf being bottle fed above red bucket'. Reverse all words of length '3' in the given sentence.

Ex Output:
young calf being bottle def above der bucket


Ex Input:
Sentence: 'a close up of the front of a train on train tracks'. Reverse all words of length '3' in the given sentence.

Ex Output:
a close up of eht front of a train on train tracks


Ex Input:
Sentence: 'two people standing in front of a mountain on skis'. Reverse all words of length '3' in the given sentence.

Ex Output:

owt people standing in front of a mountain on skis