could coffin
Verbe régulier : coffin - coffined- coffined

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could coffin
you could coffin
he could coffin
we could coffin
you could coffin
they could coffin 	I could be coffining
you could be coffining
he could be coffining
we could be coffining
you could be coffining
they could be coffining	I could have coffined
you could have coffined
he could have coffined
we could have coffined
you could have coffined
they could have coffined	I could have been coffining
you could have been coffining
he could have been coffining
we could have been coffining
you could have been coffining
they could have been coffining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't coffin
you couldn't coffin
he couldn't coffin
we couldn't coffin
you couldn't coffin
they couldn't coffin 	I couldn't be coffining
you couldn't be coffining
he couldn't be coffining
we couldn't be coffining
you couldn't be coffining
they couldn't be coffining	I couldn't have coffined
you couldn't have coffined
he couldn't have coffined
we couldn't have coffined
you couldn't have coffined
they couldn't have coffined	I couldn't have been coffining
you couldn't have been coffining
he couldn't have been coffining
we couldn't have been coffining
you couldn't have been coffining
they couldn't have been coffining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I coffin?
could you coffin?
could he coffin?
could we coffin?
could you coffin?
could they coffin? 	could I be coffining?
could you be coffining?
could he be coffining?
could we be coffining?
could you be coffining?
could they be coffining? 	could I have coffined?
could you have coffined?
could he have coffined?
could we have coffined?
could you have coffined?
could they have coffined? 	could I have been coffining?
could you have been coffining?
could he have been coffining?
could we have been coffining?
could you have been coffining?
could they have been coffining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I coffin?
couldn't you coffin?
couldn't he coffin?
couldn't we coffin?
couldn't you coffin?
couldn't they coffin? 	couldn't I be coffining?
couldn't you be coffining?
couldn't he be coffining?
couldn't we be coffining?
couldn't you be coffining?
couldn't they be coffining? 	couldn't I have coffined?
couldn't you have coffined?
couldn't he have coffined?
couldn't we have coffined?
couldn't you have coffined?
couldn't they have coffined? 	couldn't I have been coffining?
couldn't you have been coffining?
couldn't he have been coffining?
couldn't we have been coffining?
couldn't you have been coffining?
couldn't they have been coffining?