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.

Q: Sentence: 'a man walking in the shore with a surfboard under his arm'. Reverse all words of length '3' in the given sentence.

A: a nam walking in eht shore with a surfboard under sih mra
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Q: Sentence: 'a man riding skis down a snow covered slope'. Reverse all words of length '5' in the given sentence.

A: a man riding skis down a snow covered epols
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Q: Sentence: 'two guys play wii while others look on'. Reverse all words of length '3' in the given sentence.

A:
owt guys play iiw while others look on
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