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 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 male in a white shirt is surfing in some dirt'. Reverse all words of length '2' in the given sentence.

Output: a male ni a white shirt si surfing ni some dirt


Input: Consider Input: Sentence: 'a banana peal on a piece of board'. Reverse all words of length '6' in the given sentence.


Output: a ananab peal on a piece of board