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.

Ex Input:
Sentence: 'several orange trees with oranges are sitting in a store'. Remove all words of length '7' in the given sentence.

Ex Output:
orange trees with are in a store


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

Ex Output:
a army helicopter flying in the sky


Ex Input:
Sentence: 'an old clock tower with roman numerals and bells'. Remove all words of length '4' in the given sentence.

Ex Output:

an old clock tower roman numerals and bells