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.

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

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


Input: Consider Input: Sentence: 'a city truck two city buses and a yellow fire hydrant'. Reverse all words of length '4' in the given sentence.

Output: a ytic truck two ytic buses and a yellow erif hydrant


Input: Consider Input: Sentence: 'a man is standing on a sidewalk with his bike'. Reverse all words of length '3' in the given sentence.


Output: a nam is standing on a sidewalk with sih bike