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 duck and baby ducks are in the blue water'. Remove all words of length '4' in the given sentence.

Output: a and ducks are in the water


Input: Consider Input: Sentence: 'a person throwing a frisbee in a field of grass and straw'. Remove all words of length '6' in the given sentence.

Output: a throwing a frisbee in a field of grass and straw


Input: Consider Input: Sentence: 'a person carrying a surfboard up a flight of stairs'. Remove all words of length '8' in the given sentence.


Output: a person a surfboard up a flight of stairs