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.

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

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


Ex Input:
Sentence: 'a street filled with traffic and a very long bus'. Reverse all words of length '4' in the given sentence.

Ex Output:
a street filled htiw traffic and a yrev gnol bus


Ex Input:
Sentence: 'a dimly lit bathroom with a row of sinks'. Reverse all words of length '3' in the given sentence.

Ex Output:

a dimly til bathroom with a wor of sinks