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.

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

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


Input: Consider Input: Sentence: 'two young men are playing a game on the wii'. Remove all words of length '4' in the given sentence.

Output: two young men are playing a on the wii


Input: Consider Input: Sentence: 'a city bus is going down a street'. Remove all words of length '4' in the given sentence.


Output: a bus is going a street