I can convene you can convene he can convene we can convene you can convene they can convene
V-ing form
I can be convening you can be convening he can be convening we can be convening you can be convening they can be convening
Perfect
I can have convened you can have convened he can have convened we can have convened you can have convened they can have convened
V-ing perfect
I can have been convening you can have been convening he can have been convening we can have been convening you can have been convening they can have been convening
Negation
Simple form
I can't convene you can't convene he can't convene we can't convene you can't convene they can't convene
V-ing form
I can't be convening you can't be convening he can't be convening we can't be convening you can't be convening they can't be convening
Perfect
I can't have convened you can't have convened he can't have convened we can't have convened you can't have convened they can't have convened
V-ing perfect
I can't have been convening you can't have been convening he can't have been convening we can't have been convening you can't have been convening they can't have been convening
Interrogative form
Simple form
can I convene? can you convene? can he convene? can we convene? can you convene? can they convene?
V-ing form
can I be convening? can you be convening? can he be convening? can we be convening? can you be convening? can they be convening?
Perfect
can I have convened? can you have convened? can he have convened? can we have convened? can you have convened? can they have convened?
V-ing perfect
can I have been convening? can you have been convening? can he have been convening? can we have been convening? can you have been convening? can they have been convening?
Interro-negative form
Simple form
can't I convene? can't you convene? can't he convene? can't we convene? can't you convene? can't they convene?
V-ing form
can't I be convening? can't you be convening? can't he be convening? can't we be convening? can't you be convening? can't they be convening?
Perfect
can't I have convened? can't you have convened? can't he have convened? can't we have convened? can't you have convened? can't they have convened?
V-ing perfect
can't I have been convening? can't you have been convening? can't he have been convening? can't we have been convening? can't you have been convening? can't they have been convening?