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 dog lays next to a bag on a couch'. Reverse all words of length '4' in the given sentence.

Output: a dog syal txen to a bag on a couch


Input: Consider Input: Sentence: 'a black cat laying on top of a couch next to a tv remote control'. Reverse all words of length '6' in the given sentence.

Output: a black cat gniyal on top of a couch next to a tv etomer control


Input: Consider Input: Sentence: 'a crowd of people with umbrellas are walking on a brick sidewalk on a rainy day'. Reverse all words of length '4' in the given sentence.


Output: a crowd of people htiw umbrellas are walking on a brick sidewalk on a rainy day