I can insult you can insult he can insult we can insult you can insult they can insult
V-ing form
I can be insulting you can be insulting he can be insulting we can be insulting you can be insulting they can be insulting
Perfect
I can have insulted you can have insulted he can have insulted we can have insulted you can have insulted they can have insulted
V-ing perfect
I can have been insulting you can have been insulting he can have been insulting we can have been insulting you can have been insulting they can have been insulting
Negation
Simple form
I can't insult you can't insult he can't insult we can't insult you can't insult they can't insult
V-ing form
I can't be insulting you can't be insulting he can't be insulting we can't be insulting you can't be insulting they can't be insulting
Perfect
I can't have insulted you can't have insulted he can't have insulted we can't have insulted you can't have insulted they can't have insulted
V-ing perfect
I can't have been insulting you can't have been insulting he can't have been insulting we can't have been insulting you can't have been insulting they can't have been insulting
Interrogative form
Simple form
can I insult? can you insult? can he insult? can we insult? can you insult? can they insult?
V-ing form
can I be insulting? can you be insulting? can he be insulting? can we be insulting? can you be insulting? can they be insulting?
Perfect
can I have insulted? can you have insulted? can he have insulted? can we have insulted? can you have insulted? can they have insulted?
V-ing perfect
can I have been insulting? can you have been insulting? can he have been insulting? can we have been insulting? can you have been insulting? can they have been insulting?
Interro-negative form
Simple form
can't I insult? can't you insult? can't he insult? can't we insult? can't you insult? can't they insult?
V-ing form
can't I be insulting? can't you be insulting? can't he be insulting? can't we be insulting? can't you be insulting? can't they be insulting?
Perfect
can't I have insulted? can't you have insulted? can't he have insulted? can't we have insulted? can't you have insulted? can't they have insulted?
V-ing perfect
can't I have been insulting? can't you have been insulting? can't he have been insulting? can't we have been insulting? can't you have been insulting? can't they have been insulting?