could sentinel
Verbe régulier : sentinel - sentineled- sentineled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sentinel
you could sentinel
she could sentinel
we could sentinel
you could sentinel
they could sentinel 	I could be sentineling
you could be sentineling
she could be sentineling
we could be sentineling
you could be sentineling
they could be sentineling	I could have sentineled
you could have sentineled
she could have sentineled
we could have sentineled
you could have sentineled
they could have sentineled	I could have been sentineling
you could have been sentineling
she could have been sentineling
we could have been sentineling
you could have been sentineling
they could have been sentineling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not sentinel
you could not sentinel
she could not sentinel
we could not sentinel
you could not sentinel
they could not sentinel 	I could not be sentineling
you could not be sentineling
she could not be sentineling
we could not be sentineling
you could not be sentineling
they could not be sentineling	I could not have sentineled
you could not have sentineled
she could not have sentineled
we could not have sentineled
you could not have sentineled
they could not have sentineled	I could not have been sentineling
you could not have been sentineling
she could not have been sentineling
we could not have been sentineling
you could not have been sentineling
they could not have been sentineling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sentinel?
could you sentinel?
could she sentinel?
could we sentinel?
could you sentinel?
could they sentinel? 	could I be sentineling?
could you be sentineling?
could she be sentineling?
could we be sentineling?
could you be sentineling?
could they be sentineling? 	could I have sentineled?
could you have sentineled?
could she have sentineled?
could we have sentineled?
could you have sentineled?
could they have sentineled? 	could I have been sentineling?
could you have been sentineling?
could she have been sentineling?
could we have been sentineling?
could you have been sentineling?
could they have been sentineling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not sentinel?
could you not sentinel?
could she not sentinel?
could we not sentinel?
could you not sentinel?
could they not sentinel? 	could I not be sentineling?
could you not be sentineling?
could she not be sentineling?
could we not be sentineling?
could you not be sentineling?
could they not be sentineling? 	could I not have sentineled?
could you not have sentineled?
could she not have sentineled?
could we not have sentineled?
could you not have sentineled?
could they not have sentineled? 	could I not have been sentineling?
could you not have been sentineling?
could she not have been sentineling?
could we not have been sentineling?
could you not have been sentineling?
could they not have been sentineling?