could vestibule
Verbe régulier : vestibule - vestibuled- vestibuled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could vestibule
you could vestibule
she could vestibule
we could vestibule
you could vestibule
they could vestibule 	I could be vestibuling
you could be vestibuling
she could be vestibuling
we could be vestibuling
you could be vestibuling
they could be vestibuling	I could have vestibuled
you could have vestibuled
she could have vestibuled
we could have vestibuled
you could have vestibuled
they could have vestibuled	I could have been vestibuling
you could have been vestibuling
she could have been vestibuling
we could have been vestibuling
you could have been vestibuling
they could have been vestibuling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not vestibule
you could not vestibule
she could not vestibule
we could not vestibule
you could not vestibule
they could not vestibule 	I could not be vestibuling
you could not be vestibuling
she could not be vestibuling
we could not be vestibuling
you could not be vestibuling
they could not be vestibuling	I could not have vestibuled
you could not have vestibuled
she could not have vestibuled
we could not have vestibuled
you could not have vestibuled
they could not have vestibuled	I could not have been vestibuling
you could not have been vestibuling
she could not have been vestibuling
we could not have been vestibuling
you could not have been vestibuling
they could not have been vestibuling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I vestibule?
could you vestibule?
could she vestibule?
could we vestibule?
could you vestibule?
could they vestibule? 	could I be vestibuling?
could you be vestibuling?
could she be vestibuling?
could we be vestibuling?
could you be vestibuling?
could they be vestibuling? 	could I have vestibuled?
could you have vestibuled?
could she have vestibuled?
could we have vestibuled?
could you have vestibuled?
could they have vestibuled? 	could I have been vestibuling?
could you have been vestibuling?
could she have been vestibuling?
could we have been vestibuling?
could you have been vestibuling?
could they have been vestibuling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not vestibule?
could you not vestibule?
could she not vestibule?
could we not vestibule?
could you not vestibule?
could they not vestibule? 	could I not be vestibuling?
could you not be vestibuling?
could she not be vestibuling?
could we not be vestibuling?
could you not be vestibuling?
could they not be vestibuling? 	could I not have vestibuled?
could you not have vestibuled?
could she not have vestibuled?
could we not have vestibuled?
could you not have vestibuled?
could they not have vestibuled? 	could I not have been vestibuling?
could you not have been vestibuling?
could she not have been vestibuling?
could we not have been vestibuling?
could you not have been vestibuling?
could they not have been vestibuling?