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: 'a european army helicopter flying in the sky'. Remove all words of length '8' in the given sentence.

Output: a army helicopter flying in the sky


Input: Consider Input: Sentence: 'a woman tucks a small boy into bed for the night'. Remove all words of length '4' in the given sentence.

Output: a woman tucks a small boy bed for the night


Input: Consider Input: Sentence: 'a pole has several different road signs on it'. Remove all words of length '2' in the given sentence.


Output: a pole has several different road signs