I can stand you can stand she can stand we can stand you can stand they can stand
V-ing form
I can be standing you can be standing she can be standing we can be standing you can be standing they can be standing
Perfect
I can have stood you can have stood she can have stood we can have stood you can have stood they can have stood
V-ing perfect
I can have been standing you can have been standing she can have been standing we can have been standing you can have been standing they can have been standing
Negation
Simple form
I cannot stand you cannot stand she cannot stand we cannot stand you cannot stand they cannot stand
V-ing form
I cannot be standing you cannot be standing she cannot be standing we cannot be standing you cannot be standing they cannot be standing
Perfect
I cannot have stood you cannot have stood she cannot have stood we cannot have stood you cannot have stood they cannot have stood
V-ing perfect
I cannot have been standing you cannot have been standing she cannot have been standing we cannot have been standing you cannot have been standing they cannot have been standing
Interrogative form
Simple form
can I stand? can you stand? can she stand? can we stand? can you stand? can they stand?
V-ing form
can I be standing? can you be standing? can she be standing? can we be standing? can you be standing? can they be standing?
Perfect
can I have stood? can you have stood? can she have stood? can we have stood? can you have stood? can they have stood?
V-ing perfect
can I have been standing? can you have been standing? can she have been standing? can we have been standing? can you have been standing? can they have been standing?
Interro-negative form
Simple form
can I not stand? can you not stand? can she not stand? can we not stand? can you not stand? can they not stand?
V-ing form
can I not be standing? can you not be standing? can she not be standing? can we not be standing? can you not be standing? can they not be standing?
Perfect
can I not have stood? can you not have stood? can she not have stood? can we not have stood? can you not have stood? can they not have stood?
V-ing perfect
can I not have been standing? can you not have been standing? can she not have been standing? can we not have been standing? can you not have been standing? can they not have been standing?