I can graduate you can graduate he can graduate we can graduate you can graduate they can graduate
V-ing form
I can be graduating you can be graduating he can be graduating we can be graduating you can be graduating they can be graduating
Perfect
I can have graduated you can have graduated he can have graduated we can have graduated you can have graduated they can have graduated
V-ing perfect
I can have been graduating you can have been graduating he can have been graduating we can have been graduating you can have been graduating they can have been graduating
Negation
Simple form
I can't graduate you can't graduate he can't graduate we can't graduate you can't graduate they can't graduate
V-ing form
I can't be graduating you can't be graduating he can't be graduating we can't be graduating you can't be graduating they can't be graduating
Perfect
I can't have graduated you can't have graduated he can't have graduated we can't have graduated you can't have graduated they can't have graduated
V-ing perfect
I can't have been graduating you can't have been graduating he can't have been graduating we can't have been graduating you can't have been graduating they can't have been graduating
Interrogative form
Simple form
can I graduate? can you graduate? can he graduate? can we graduate? can you graduate? can they graduate?
V-ing form
can I be graduating? can you be graduating? can he be graduating? can we be graduating? can you be graduating? can they be graduating?
Perfect
can I have graduated? can you have graduated? can he have graduated? can we have graduated? can you have graduated? can they have graduated?
V-ing perfect
can I have been graduating? can you have been graduating? can he have been graduating? can we have been graduating? can you have been graduating? can they have been graduating?
Interro-negative form
Simple form
can't I graduate? can't you graduate? can't he graduate? can't we graduate? can't you graduate? can't they graduate?
V-ing form
can't I be graduating? can't you be graduating? can't he be graduating? can't we be graduating? can't you be graduating? can't they be graduating?
Perfect
can't I have graduated? can't you have graduated? can't he have graduated? can't we have graduated? can't you have graduated? can't they have graduated?
V-ing perfect
can't I have been graduating? can't you have been graduating? can't he have been graduating? can't we have been graduating? can't you have been graduating? can't they have been graduating?