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
he could define
we could define
you could define
they could define 	I could be defining
you could be defining
he could be defining
we could be defining
you could be defining
they could be defining	I could have defined
you could have defined
he 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
he 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
he 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
he 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
he 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
he 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 he define?
could we define?
could you define?
could they define? 	could I be defining?
could you be defining?
could he be defining?
could we be defining?
could you be defining?
could they be defining? 	could I have defined?
could you have defined?
could he 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 he 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 he 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 he 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 he 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 he have been defining?
couldn't we have been defining?
couldn't you have been defining?
couldn't they have been defining?