I can superscribe you can superscribe she can superscribe we can superscribe you can superscribe they can superscribe
V-ing form
I can be superscribing you can be superscribing she can be superscribing we can be superscribing you can be superscribing they can be superscribing
Perfect
I can have superscribed you can have superscribed she can have superscribed we can have superscribed you can have superscribed they can have superscribed
V-ing perfect
I can have been superscribing you can have been superscribing she can have been superscribing we can have been superscribing you can have been superscribing they can have been superscribing
Negation
Simple form
I can't superscribe you can't superscribe she can't superscribe we can't superscribe you can't superscribe they can't superscribe
V-ing form
I can't be superscribing you can't be superscribing she can't be superscribing we can't be superscribing you can't be superscribing they can't be superscribing
Perfect
I can't have superscribed you can't have superscribed she can't have superscribed we can't have superscribed you can't have superscribed they can't have superscribed
V-ing perfect
I can't have been superscribing you can't have been superscribing she can't have been superscribing we can't have been superscribing you can't have been superscribing they can't have been superscribing
Interrogative form
Simple form
can I superscribe? can you superscribe? can she superscribe? can we superscribe? can you superscribe? can they superscribe?
V-ing form
can I be superscribing? can you be superscribing? can she be superscribing? can we be superscribing? can you be superscribing? can they be superscribing?
Perfect
can I have superscribed? can you have superscribed? can she have superscribed? can we have superscribed? can you have superscribed? can they have superscribed?
V-ing perfect
can I have been superscribing? can you have been superscribing? can she have been superscribing? can we have been superscribing? can you have been superscribing? can they have been superscribing?
Interro-negative form
Simple form
can't I superscribe? can't you superscribe? can't she superscribe? can't we superscribe? can't you superscribe? can't they superscribe?
V-ing form
can't I be superscribing? can't you be superscribing? can't she be superscribing? can't we be superscribing? can't you be superscribing? can't they be superscribing?
Perfect
can't I have superscribed? can't you have superscribed? can't she have superscribed? can't we have superscribed? can't you have superscribed? can't they have superscribed?
V-ing perfect
can't I have been superscribing? can't you have been superscribing? can't she have been superscribing? can't we have been superscribing? can't you have been superscribing? can't they have been superscribing?