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 group of people loading a tour bus'. Reverse all words of length '3' in the given sentence.

Ex Output:
a group of people loading a tour sub


Ex Input:
Sentence: 'a pair of boats are beside each other in the water'. Reverse all words of length '6' in the given sentence.

Ex Output:
a pair of boats are ediseb each other in the water


Ex Input:
Sentence: 'a clock tower with a weather vein that is lit up'. Reverse all words of length '7' in the given sentence.

Ex Output:

a clock tower with a rehtaew vein that is lit up