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: 'a guy sitting on his butt flying a kite'. Remove all words of length '4' in the given sentence.

Ex Output:
a guy sitting on his flying a


Ex Input:
Sentence: 'a bird perched on a wood rail by itself'. Remove all words of length '7' in the given sentence.

Ex Output:
a bird on a wood rail by itself


Ex Input:
Sentence: 'a street sign is indicating where the bike trail is'. Remove all words of length '4' in the given sentence.

Ex Output:

a street is indicating where the trail is