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: 'the black and white zebras congregate as a pack in the field'. Remove all words of length '4' in the given sentence.

Ex Output:
the black and white zebras congregate as a in the field


Ex Input:
Sentence: 'the city signs direct which way traffic should go'. Remove all words of length '3' in the given sentence.

Ex Output:
city signs direct which traffic should go


Ex Input:
Sentence: 'a person on a small boat traveling past some people on the bay'. Remove all words of length '2' in the given sentence.

Ex Output:

a person a small boat traveling past some people the bay