In a grammar book, it is said that VP 21 is Subject × Verb. If so, can we say that the sentence 'Any number can be used.' has been written in VP 21(Verb Pattern 21)?According to the verb patterns by A.S.Hornby, I'd like to know the verb pattern in the sentence mentioned above. There are 25 verb patterns in 'A Guide to Patterns and Usage in English' written by A.S.Hornby. I'm confused with the verb pattern of the example sentence in my post.Please help me with this.