could raven
Verbe régulier : raven - ravened- ravened

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could raven
you could raven
she could raven
we could raven
you could raven
they could raven 	I could be ravening
you could be ravening
she could be ravening
we could be ravening
you could be ravening
they could be ravening	I could have ravened
you could have ravened
she could have ravened
we could have ravened
you could have ravened
they could have ravened	I could have been ravening
you could have been ravening
she could have been ravening
we could have been ravening
you could have been ravening
they could have been ravening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't raven
you couldn't raven
she couldn't raven
we couldn't raven
you couldn't raven
they couldn't raven 	I couldn't be ravening
you couldn't be ravening
she couldn't be ravening
we couldn't be ravening
you couldn't be ravening
they couldn't be ravening	I couldn't have ravened
you couldn't have ravened
she couldn't have ravened
we couldn't have ravened
you couldn't have ravened
they couldn't have ravened	I couldn't have been ravening
you couldn't have been ravening
she couldn't have been ravening
we couldn't have been ravening
you couldn't have been ravening
they couldn't have been ravening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I raven?
could you raven?
could she raven?
could we raven?
could you raven?
could they raven? 	could I be ravening?
could you be ravening?
could she be ravening?
could we be ravening?
could you be ravening?
could they be ravening? 	could I have ravened?
could you have ravened?
could she have ravened?
could we have ravened?
could you have ravened?
could they have ravened? 	could I have been ravening?
could you have been ravening?
could she have been ravening?
could we have been ravening?
could you have been ravening?
could they have been ravening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I raven?
couldn't you raven?
couldn't she raven?
couldn't we raven?
couldn't you raven?
couldn't they raven? 	couldn't I be ravening?
couldn't you be ravening?
couldn't she be ravening?
couldn't we be ravening?
couldn't you be ravening?
couldn't they be ravening? 	couldn't I have ravened?
couldn't you have ravened?
couldn't she have ravened?
couldn't we have ravened?
couldn't you have ravened?
couldn't they have ravened? 	couldn't I have been ravening?
couldn't you have been ravening?
couldn't she have been ravening?
couldn't we have been ravening?
couldn't you have been ravening?
couldn't they have been ravening?