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 black cat laying on top of a couch next to a tv remote control'. Reverse all words of length '6' in the given sentence.
a black cat gniyal on top of a couch next to a tv etomer control

Sentence: 'a cat with a santa hat standing on a rug'. Reverse all words of length '8' in the given sentence.
a cat with a santa hat gnidnats on a rug

Sentence: 'people are loading up their luggage and themselves onto a tiny plane'. Reverse all words of length '1' in the given sentence.

people are loading up their luggage and themselves onto a tiny plane