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: 'teenagers riding skateboards in a concrete skate park'. Reverse all words of length '1' in the given sentence.

Ex Output:
teenagers riding skateboards in a concrete skate park


Ex Input:
Sentence: 'there is a large black bear that is siting on a rock'. Reverse all words of length '5' in the given sentence.

Ex Output:
ereht is a egral kcalb bear that is siting on a rock


Ex Input:
Sentence: 'a boat and rescue surf board on a beach'. Reverse all words of length '1' in the given sentence.

Ex Output:

a boat and rescue surf board on a beach