I can stand you can stand he can stand we can stand you can stand they can stand
V-ing form
I can be standing you can be standing he can be standing we can be standing you can be standing they can be standing
Perfect
I can have stood you can have stood he 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 he 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 he cannot stand we cannot stand you cannot stand they cannot stand
V-ing form
I cannot be standing you cannot be standing he cannot be standing we cannot be standing you cannot be standing they cannot be standing
Perfect
I cannot have stood you cannot have stood he 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 he 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 he stand? can we stand? can you stand? can they stand?
V-ing form
can I be standing? can you be standing? can he be standing? can we be standing? can you be standing? can they be standing?
Perfect
can I have stood? can you have stood? can he 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 he 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 he 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 he 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 he 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 he not have been standing? can we not have been standing? can you not have been standing? can they not have been standing?