I can dight you can dight he can dight we can dight you can dight they can dight
V-ing form
I can be dighting you can be dighting he can be dighting we can be dighting you can be dighting they can be dighting
Perfect
I can have dighted you can have dighted he can have dighted we can have dighted you can have dighted they can have dighted
V-ing perfect
I can have been dighting you can have been dighting he can have been dighting we can have been dighting you can have been dighting they can have been dighting
Negation
Simple form
I can't dight you can't dight he can't dight we can't dight you can't dight they can't dight
V-ing form
I can't be dighting you can't be dighting he can't be dighting we can't be dighting you can't be dighting they can't be dighting
Perfect
I can't have dighted you can't have dighted he can't have dighted we can't have dighted you can't have dighted they can't have dighted
V-ing perfect
I can't have been dighting you can't have been dighting he can't have been dighting we can't have been dighting you can't have been dighting they can't have been dighting
Interrogative form
Simple form
can I dight? can you dight? can he dight? can we dight? can you dight? can they dight?
V-ing form
can I be dighting? can you be dighting? can he be dighting? can we be dighting? can you be dighting? can they be dighting?
Perfect
can I have dighted? can you have dighted? can he have dighted? can we have dighted? can you have dighted? can they have dighted?
V-ing perfect
can I have been dighting? can you have been dighting? can he have been dighting? can we have been dighting? can you have been dighting? can they have been dighting?
Interro-negative form
Simple form
can't I dight? can't you dight? can't he dight? can't we dight? can't you dight? can't they dight?
V-ing form
can't I be dighting? can't you be dighting? can't he be dighting? can't we be dighting? can't you be dighting? can't they be dighting?
Perfect
can't I have dighted? can't you have dighted? can't he have dighted? can't we have dighted? can't you have dighted? can't they have dighted?
V-ing perfect
can't I have been dighting? can't you have been dighting? can't he have been dighting? can't we have been dighting? can't you have been dighting? can't they have been dighting?