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 red pair of scissors on top of an envelope'. Reverse all words of length '2' in the given sentence.
a red pair fo scissors no top fo na envelope

Sentence: 'a computer and laptop sitting on a desk'. Reverse all words of length '6' in the given sentence.
a computer and potpal sitting on a desk

Sentence: 'an airbus a350 in the middle of lifting off'. Reverse all words of length '6' in the given sentence.

an subria a350 in the elddim of lifting off