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 couldn't vestibule
you couldn't vestibule
she couldn't vestibule
we couldn't vestibule
you couldn't vestibule
they couldn't vestibule 	I couldn't be vestibuling
you couldn't be vestibuling
she couldn't be vestibuling
we couldn't be vestibuling
you couldn't be vestibuling
they couldn't be vestibuling	I couldn't have vestibuled
you couldn't have vestibuled
she couldn't have vestibuled
we couldn't have vestibuled
you couldn't have vestibuled
they couldn't have vestibuled	I couldn't have been vestibuling
you couldn't have been vestibuling
she couldn't have been vestibuling
we couldn't have been vestibuling
you couldn't have been vestibuling
they couldn't 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 	
couldn't I vestibule?
couldn't you vestibule?
couldn't she vestibule?
couldn't we vestibule?
couldn't you vestibule?
couldn't they vestibule? 	couldn't I be vestibuling?
couldn't you be vestibuling?
couldn't she be vestibuling?
couldn't we be vestibuling?
couldn't you be vestibuling?
couldn't they be vestibuling? 	couldn't I have vestibuled?
couldn't you have vestibuled?
couldn't she have vestibuled?
couldn't we have vestibuled?
couldn't you have vestibuled?
couldn't they have vestibuled? 	couldn't I have been vestibuling?
couldn't you have been vestibuling?
couldn't she have been vestibuling?
couldn't we have been vestibuling?
couldn't you have been vestibuling?
couldn't they have been vestibuling?