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 sink and a bathtub and shower with a mirror above the sink'. Reverse all words of length '4' in the given sentence.
a knis and a bathtub and shower htiw a mirror above the knis

Sentence: 'a blue train pulling into a train station next to a white clock'. Reverse all words of length '4' in the given sentence.

a eulb train pulling otni a train station txen to a white clock