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 cow stretching its head over a fence to eat some leaves'. Remove all words of length '4' in the given sentence.

Ex Output:
a cow stretching its a fence to eat leaves


Ex Input:
Sentence: 'boats sailing along a river next to a cliff with buildings on it'. Remove all words of length '4' in the given sentence.

Ex Output:
boats sailing along a river to a cliff buildings on it


Ex Input:
Sentence: 'a window on brick wall with vases in the sill'. Remove all words of length '2' in the given sentence.

Ex Output:

a window brick wall with vases the sill