could null
Verbe régulier : null - nulled- nulled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could null
you could null
she could null
we could null
you could null
they could null 	I could be nulling
you could be nulling
she could be nulling
we could be nulling
you could be nulling
they could be nulling	I could have nulled
you could have nulled
she could have nulled
we could have nulled
you could have nulled
they could have nulled	I could have been nulling
you could have been nulling
she could have been nulling
we could have been nulling
you could have been nulling
they could have been nulling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not null
you could not null
she could not null
we could not null
you could not null
they could not null 	I could not be nulling
you could not be nulling
she could not be nulling
we could not be nulling
you could not be nulling
they could not be nulling	I could not have nulled
you could not have nulled
she could not have nulled
we could not have nulled
you could not have nulled
they could not have nulled	I could not have been nulling
you could not have been nulling
she could not have been nulling
we could not have been nulling
you could not have been nulling
they could not have been nulling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I null?
could you null?
could she null?
could we null?
could you null?
could they null? 	could I be nulling?
could you be nulling?
could she be nulling?
could we be nulling?
could you be nulling?
could they be nulling? 	could I have nulled?
could you have nulled?
could she have nulled?
could we have nulled?
could you have nulled?
could they have nulled? 	could I have been nulling?
could you have been nulling?
could she have been nulling?
could we have been nulling?
could you have been nulling?
could they have been nulling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not null?
could you not null?
could she not null?
could we not null?
could you not null?
could they not null? 	could I not be nulling?
could you not be nulling?
could she not be nulling?
could we not be nulling?
could you not be nulling?
could they not be nulling? 	could I not have nulled?
could you not have nulled?
could she not have nulled?
could we not have nulled?
could you not have nulled?
could they not have nulled? 	could I not have been nulling?
could you not have been nulling?
could she not have been nulling?
could we not have been nulling?
could you not have been nulling?
could they not have been nulling?