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: 'several people flying kites on a sandy beach'. Reverse all words of length '7' in the given sentence.

Ex Output:
lareves people flying kites on a sandy beach


Ex Input:
Sentence: 'a blie bag is sitting on a desk'. Reverse all words of length '2' in the given sentence.

Ex Output:
a blie bag si sitting no a desk


Ex Input:
Sentence: 'there is an entree on a place with spoon'. Reverse all words of length '6' in the given sentence.

Ex Output:

there is an eertne on a place with spoon