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 red pair of scissors on top of an envelope'. Reverse all words of length '2' in the given sentence.

Output: a red pair fo scissors no top fo na envelope


Input: Consider Input: Sentence: 'a bird sitting in a tree next to a citrus fruit'. Reverse all words of length '6' in the given sentence.

Output: a bird sitting in a tree next to a surtic fruit


Input: Consider Input: Sentence: 'a black cat standing on a brick in the bushes'. Reverse all words of length '8' in the given sentence.


Output: a black cat gnidnats on a brick in the bushes