I can pore you can pore he can pore we can pore you can pore they can pore
V-ing form
I can be poring you can be poring he can be poring we can be poring you can be poring they can be poring
Perfect
I can have pored you can have pored he can have pored we can have pored you can have pored they can have pored
V-ing perfect
I can have been poring you can have been poring he can have been poring we can have been poring you can have been poring they can have been poring
Negation
Simple form
I cannot pore you cannot pore he cannot pore we cannot pore you cannot pore they cannot pore
V-ing form
I cannot be poring you cannot be poring he cannot be poring we cannot be poring you cannot be poring they cannot be poring
Perfect
I cannot have pored you cannot have pored he cannot have pored we cannot have pored you cannot have pored they cannot have pored
V-ing perfect
I cannot have been poring you cannot have been poring he cannot have been poring we cannot have been poring you cannot have been poring they cannot have been poring
Interrogative form
Simple form
can I pore? can you pore? can he pore? can we pore? can you pore? can they pore?
V-ing form
can I be poring? can you be poring? can he be poring? can we be poring? can you be poring? can they be poring?
Perfect
can I have pored? can you have pored? can he have pored? can we have pored? can you have pored? can they have pored?
V-ing perfect
can I have been poring? can you have been poring? can he have been poring? can we have been poring? can you have been poring? can they have been poring?
Interro-negative form
Simple form
can I not pore? can you not pore? can he not pore? can we not pore? can you not pore? can they not pore?
V-ing form
can I not be poring? can you not be poring? can he not be poring? can we not be poring? can you not be poring? can they not be poring?
Perfect
can I not have pored? can you not have pored? can he not have pored? can we not have pored? can you not have pored? can they not have pored?
V-ing perfect
can I not have been poring? can you not have been poring? can he not have been poring? can we not have been poring? can you not have been poring? can they not have been poring?