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 colorful stuffed bear sits on a purple outdoor bench'. Remove all words of length '4' in the given sentence.

Output: a colorful stuffed on a purple outdoor bench


Input: Consider Input: Sentence: 'a large airplane flies in blue skies over some pretty trees'. Remove all words of length '6' in the given sentence.


Output: a large airplane flies in blue skies over some trees