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: 'a man standing next to a parked car under a street sign'. Reverse all words of length '6' in the given sentence.
a man standing next to a dekrap car under a teerts sign

Sentence: 'two birds standing and sticking their heads in muddy water'. Reverse all words of length '3' in the given sentence.
owt birds standing dna sticking their heads in muddy water

Sentence: 'young surfer being thrown off board at an indoor facility'. Reverse all words of length '6' in the given sentence.

young refrus being nworht off board at an roodni facility