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