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 hand is holding an iced doughnut with sprinkles'. Reverse all words of length '1' in the given sentence.

Ex Output:
a hand is holding an iced doughnut with sprinkles


Ex Input:
Sentence: 'a small white dog with a hat on his rear end'. Reverse all words of length '3' in the given sentence.

Ex Output:
a small white god with a tah on sih rear dne


Ex Input:
Sentence: 'a blonde haired woman running beside her black horse'. Reverse all words of length '7' in the given sentence.

Ex Output:

a blonde haired woman gninnur beside her black horse