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 tennis player is swinging at a tennis ball'. Reverse all words of length '2' in the given sentence.

Output: a tennis player si swinging ta a tennis ball


Input: Consider Input: Sentence: 'pictures a candle a single flower and a stuffed bear on a table'. Reverse all words of length '6' in the given sentence.

Output: pictures a eldnac a elgnis rewolf and a stuffed bear on a table


Input: Consider Input: Sentence: 'a bunch of people waiting for the crosswalk outside in the rain'. Reverse all words of length '7' in the given sentence.


Output: a bunch of people gnitiaw for the crosswalk edistuo in the rain