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 small kid walks down a aisle with an umbrella in hand'. Reverse all words of length '8' in the given sentence.

Output: a small kid walks down a aisle with an allerbmu in hand


Input: Consider Input: Sentence: 'a river filled with lots of boats and surrounded by buildings'. Reverse all words of length '4' in the given sentence.

Output: a river filled htiw stol of boats and surrounded by buildings


Input: Consider Input: Sentence: 'a person lays down while using a cell phone'. Reverse all words of length '6' in the given sentence.


Output: a nosrep lays down while using a cell phone