In this task, you need to remove 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.

Ex Input:
Sentence: 'a large flock of birds flying over a field next to a  tree'. Remove all words of length '2' in the given sentence.

Ex Output:
a large flock birds flying over a field next a tree


Ex Input:
Sentence: 'a young skier dressed in red awaiting a ski lift'. Remove all words of length '4' in the given sentence.

Ex Output:
a young skier dressed in red awaiting a ski


Ex Input:
Sentence: 'a large old building with cars parked in front of it'. Remove all words of length '6' in the given sentence.

Ex Output:

a large old building with cars in front of it