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 couple of trains are sitting on some tracks'. Reverse all words of length '2' in the given sentence.

Output: a couple fo trains are sitting no some tracks


Input: Consider Input: Sentence: 'a living room filled with furniture and windows'. Reverse all words of length '1' in the given sentence.

Output: a living room filled with furniture and windows


Input: Consider Input: Sentence: 'a toilet a phone a counter and a shelf'. Reverse all words of length '5' in the given sentence.


Output: a toilet a enohp a counter and a flehs