could subvene
Verbe régulier : subvene - subvened- subvened

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could subvene
you could subvene
she could subvene
we could subvene
you could subvene
they could subvene 	I could be subvening
you could be subvening
she could be subvening
we could be subvening
you could be subvening
they could be subvening	I could have subvened
you could have subvened
she could have subvened
we could have subvened
you could have subvened
they could have subvened	I could have been subvening
you could have been subvening
she could have been subvening
we could have been subvening
you could have been subvening
they could have been subvening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not subvene
you could not subvene
she could not subvene
we could not subvene
you could not subvene
they could not subvene 	I could not be subvening
you could not be subvening
she could not be subvening
we could not be subvening
you could not be subvening
they could not be subvening	I could not have subvened
you could not have subvened
she could not have subvened
we could not have subvened
you could not have subvened
they could not have subvened	I could not have been subvening
you could not have been subvening
she could not have been subvening
we could not have been subvening
you could not have been subvening
they could not have been subvening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I subvene?
could you subvene?
could she subvene?
could we subvene?
could you subvene?
could they subvene? 	could I be subvening?
could you be subvening?
could she be subvening?
could we be subvening?
could you be subvening?
could they be subvening? 	could I have subvened?
could you have subvened?
could she have subvened?
could we have subvened?
could you have subvened?
could they have subvened? 	could I have been subvening?
could you have been subvening?
could she have been subvening?
could we have been subvening?
could you have been subvening?
could they have been subvening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not subvene?
could you not subvene?
could she not subvene?
could we not subvene?
could you not subvene?
could they not subvene? 	could I not be subvening?
could you not be subvening?
could she not be subvening?
could we not be subvening?
could you not be subvening?
could they not be subvening? 	could I not have subvened?
could you not have subvened?
could she not have subvened?
could we not have subvened?
could you not have subvened?
could they not have subvened? 	could I not have been subvening?
could you not have been subvening?
could she not have been subvening?
could we not have been subvening?
could you not have been subvening?
could they not have been subvening?