English verb conjugation
COULD CONVENE

Regular verb: convene - convened - convened

Affirmation

Simple form	V-ing form
I could convene you could convene he could convene we could convene you could convene they could convene	I could be convening you could be convening he could be convening we could be convening you could be convening they could be convening
Perfect	V-ing perfect
I could have convened you could have convened he could have convened we could have convened you could have convened they could have convened	I could have been convening you could have been convening he could have been convening we could have been convening you could have been convening they could have been convening

Negation

Simple form	V-ing form
I could not convene you could not convene he could not convene we could not convene you could not convene they could not convene	I could not be convening you could not be convening he could not be convening we could not be convening you could not be convening they could not be convening
Perfect	V-ing perfect
I could not have convened you could not have convened he could not have convened we could not have convened you could not have convened they could not have convened	I could not have been convening you could not have been convening he could not have been convening we could not have been convening you could not have been convening they could not have been convening

Interrogative form

Simple form	V-ing form
could I convene? could you convene? could he convene? could we convene? could you convene? could they convene?	could I be convening? could you be convening? could he be convening? could we be convening? could you be convening? could they be convening?
Perfect	V-ing perfect
could I have convened? could you have convened? could he have convened? could we have convened? could you have convened? could they have convened?	could I have been convening? could you have been convening? could he have been convening? could we have been convening? could you have been convening? could they have been convening?

Interro-negative form

Simple form	V-ing form
could I not convene? could you not convene? could he not convene? could we not convene? could you not convene? could they not convene?	could I not be convening? could you not be convening? could he not be convening? could we not be convening? could you not be convening? could they not be convening?
Perfect	V-ing perfect
could I not have convened? could you not have convened? could he not have convened? could we not have convened? could you not have convened? could they not have convened?	could I not have been convening? could you not have been convening? could he not have been convening? could we not have been convening? could you not have been convening? could they not have been convening?