could define
Verbe régulier : define - defined- defined
Traduction française : définir - délimiter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could define
you could define
she could define
we could define
you could define
they could define 	I could be defining
you could be defining
she could be defining
we could be defining
you could be defining
they could be defining	I could have defined
you could have defined
she could have defined
we could have defined
you could have defined
they could have defined	I could have been defining
you could have been defining
she could have been defining
we could have been defining
you could have been defining
they could have been defining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't define
you couldn't define
she couldn't define
we couldn't define
you couldn't define
they couldn't define 	I couldn't be defining
you couldn't be defining
she couldn't be defining
we couldn't be defining
you couldn't be defining
they couldn't be defining	I couldn't have defined
you couldn't have defined
she couldn't have defined
we couldn't have defined
you couldn't have defined
they couldn't have defined	I couldn't have been defining
you couldn't have been defining
she couldn't have been defining
we couldn't have been defining
you couldn't have been defining
they couldn't have been defining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I define?
could you define?
could she define?
could we define?
could you define?
could they define? 	could I be defining?
could you be defining?
could she be defining?
could we be defining?
could you be defining?
could they be defining? 	could I have defined?
could you have defined?
could she have defined?
could we have defined?
could you have defined?
could they have defined? 	could I have been defining?
could you have been defining?
could she have been defining?
could we have been defining?
could you have been defining?
could they have been defining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I define?
couldn't you define?
couldn't she define?
couldn't we define?
couldn't you define?
couldn't they define? 	couldn't I be defining?
couldn't you be defining?
couldn't she be defining?
couldn't we be defining?
couldn't you be defining?
couldn't they be defining? 	couldn't I have defined?
couldn't you have defined?
couldn't she have defined?
couldn't we have defined?
couldn't you have defined?
couldn't they have defined? 	couldn't I have been defining?
couldn't you have been defining?
couldn't she have been defining?
couldn't we have been defining?
couldn't you have been defining?
couldn't they have been defining?