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.

Sentence: 'a group of snow boarders pose in the snow on top of a hill'. Reverse all words of length '5' in the given sentence.
a puorg of snow boarders pose in the snow on top of a hill

Sentence: 'a large grouo of people riding on a bunch of motorcycles'. Reverse all words of length '5' in the given sentence.
a egral ouorg of people riding on a hcnub of motorcycles

Sentence: 'an old model firetruck in front of a small establishment'. Reverse all words of length '3' in the given sentence.

an dlo model firetruck in front of a small establishment

