could blue
Verbe régulier : blue - blued- blued

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could blue
you could blue
he could blue
we could blue
you could blue
they could blue 	I could be bluing
you could be bluing
he could be bluing
we could be bluing
you could be bluing
they could be bluing	I could have blued
you could have blued
he could have blued
we could have blued
you could have blued
they could have blued	I could have been bluing
you could have been bluing
he could have been bluing
we could have been bluing
you could have been bluing
they could have been bluing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't blue
you couldn't blue
he couldn't blue
we couldn't blue
you couldn't blue
they couldn't blue 	I couldn't be bluing
you couldn't be bluing
he couldn't be bluing
we couldn't be bluing
you couldn't be bluing
they couldn't be bluing	I couldn't have blued
you couldn't have blued
he couldn't have blued
we couldn't have blued
you couldn't have blued
they couldn't have blued	I couldn't have been bluing
you couldn't have been bluing
he couldn't have been bluing
we couldn't have been bluing
you couldn't have been bluing
they couldn't have been bluing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I blue?
could you blue?
could he blue?
could we blue?
could you blue?
could they blue? 	could I be bluing?
could you be bluing?
could he be bluing?
could we be bluing?
could you be bluing?
could they be bluing? 	could I have blued?
could you have blued?
could he have blued?
could we have blued?
could you have blued?
could they have blued? 	could I have been bluing?
could you have been bluing?
could he have been bluing?
could we have been bluing?
could you have been bluing?
could they have been bluing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I blue?
couldn't you blue?
couldn't he blue?
couldn't we blue?
couldn't you blue?
couldn't they blue? 	couldn't I be bluing?
couldn't you be bluing?
couldn't he be bluing?
couldn't we be bluing?
couldn't you be bluing?
couldn't they be bluing? 	couldn't I have blued?
couldn't you have blued?
couldn't he have blued?
couldn't we have blued?
couldn't you have blued?
couldn't they have blued? 	couldn't I have been bluing?
couldn't you have been bluing?
couldn't he have been bluing?
couldn't we have been bluing?
couldn't you have been bluing?
couldn't they have been bluing?