Definition: 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.
Input: Sentence: 'two large middle age men playing wii with remotes on their arms'. Reverse all words of length '6' in the given sentence.

two large elddim age men playing wii with remotes on their arms