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: 'a moose like ornament is peeking out of a holiday tree alongside smaller painted ornaments'. Reverse all words of length '2' in the given sentence.

a moose like ornament si peeking out fo a holiday tree alongside smaller painted ornaments