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

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


Input: Consider Input: Sentence: 'an office with file cabinets a keyboard and chairs'. Remove all words of length '4' in the given sentence.

Output: an office cabinets a keyboard and chairs


Input: Consider Input: Sentence: 'a woman and a child sitting on a bench'. Remove all words of length '7' in the given sentence.


Output: a woman and a child on a bench