English verb conjugation
COULD CONVENE

Regular verb: convene - convened - convened

Affirmation

Simple form	V-ing form
I could convene you could convene she could convene we could convene you could convene they could convene	I could be convening you could be convening she 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 she 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 she 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 couldn't convene you couldn't convene she couldn't convene we couldn't convene you couldn't convene they couldn't convene	I couldn't be convening you couldn't be convening she couldn't be convening we couldn't be convening you couldn't be convening they couldn't be convening
Perfect	V-ing perfect
I couldn't have convened you couldn't have convened she couldn't have convened we couldn't have convened you couldn't have convened they couldn't have convened	I couldn't have been convening you couldn't have been convening she couldn't have been convening we couldn't have been convening you couldn't have been convening they couldn't have been convening

Interrogative form

Simple form	V-ing form
could I convene? could you convene? could she convene? could we convene? could you convene? could they convene?	could I be convening? could you be convening? could she 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 she 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 she 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
couldn't I convene? couldn't you convene? couldn't she convene? couldn't we convene? couldn't you convene? couldn't they convene?	couldn't I be convening? couldn't you be convening? couldn't she be convening? couldn't we be convening? couldn't you be convening? couldn't they be convening?
Perfect	V-ing perfect
couldn't I have convened? couldn't you have convened? couldn't she have convened? couldn't we have convened? couldn't you have convened? couldn't they have convened?	couldn't I have been convening? couldn't you have been convening? couldn't she have been convening? couldn't we have been convening? couldn't you have been convening? couldn't they have been convening?