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: 'the bicyclists race toward an old brick church'. Reverse all words of length '2' in the given sentence.
the bicyclists race toward na old brick church

Sentence: 'a pair of boats are beside each other in the water'. Reverse all words of length '6' in the given sentence.
a pair of boats are ediseb each other in the water

Sentence: 'multiple pictures show a couch in a living room'. Reverse all words of length '6' in the given sentence.

multiple pictures show a couch in a gnivil room