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: 'an aboveground subway car on a city street'. Reverse all words of length '6' in the given sentence.

Ex Output:
an aboveground yawbus car on a city teerts


Ex Input:
Sentence: 'there is a tea pot on the gas range'. Reverse all words of length '3' in the given sentence.

Ex Output:
there is a aet top on eht sag range


Ex Input:
Sentence: 'a man is riding a horse by a river'. Reverse all words of length '3' in the given sentence.

Ex Output:

a nam is riding a horse by a river