I can contravene you can contravene he can contravene we can contravene you can contravene they can contravene
V-ing form
I can be contravening you can be contravening he can be contravening we can be contravening you can be contravening they can be contravening
Perfect
I can have contravened you can have contravened he can have contravened we can have contravened you can have contravened they can have contravened
V-ing perfect
I can have been contravening you can have been contravening he can have been contravening we can have been contravening you can have been contravening they can have been contravening
Negation
Simple form
I can't contravene you can't contravene he can't contravene we can't contravene you can't contravene they can't contravene
V-ing form
I can't be contravening you can't be contravening he can't be contravening we can't be contravening you can't be contravening they can't be contravening
Perfect
I can't have contravened you can't have contravened he can't have contravened we can't have contravened you can't have contravened they can't have contravened
V-ing perfect
I can't have been contravening you can't have been contravening he can't have been contravening we can't have been contravening you can't have been contravening they can't have been contravening
Interrogative form
Simple form
can I contravene? can you contravene? can he contravene? can we contravene? can you contravene? can they contravene?
V-ing form
can I be contravening? can you be contravening? can he be contravening? can we be contravening? can you be contravening? can they be contravening?
Perfect
can I have contravened? can you have contravened? can he have contravened? can we have contravened? can you have contravened? can they have contravened?
V-ing perfect
can I have been contravening? can you have been contravening? can he have been contravening? can we have been contravening? can you have been contravening? can they have been contravening?
Interro-negative form
Simple form
can't I contravene? can't you contravene? can't he contravene? can't we contravene? can't you contravene? can't they contravene?
V-ing form
can't I be contravening? can't you be contravening? can't he be contravening? can't we be contravening? can't you be contravening? can't they be contravening?
Perfect
can't I have contravened? can't you have contravened? can't he have contravened? can't we have contravened? can't you have contravened? can't they have contravened?
V-ing perfect
can't I have been contravening? can't you have been contravening? can't he have been contravening? can't we have been contravening? can't you have been contravening? can't they have been contravening?