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
she could coffin
we could coffin
you could coffin
they could coffin 	I could be coffining
you could be coffining
she could be coffining
we could be coffining
you could be coffining
they could be coffining	I could have coffined
you could have coffined
she 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
she 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
she 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
she 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
she 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
she 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 she coffin?
could we coffin?
could you coffin?
could they coffin? 	could I be coffining?
could you be coffining?
could she be coffining?
could we be coffining?
could you be coffining?
could they be coffining? 	could I have coffined?
could you have coffined?
could she 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 she 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 she 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 she 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 she 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 she have been coffining?
couldn't we have been coffining?
couldn't you have been coffining?
couldn't they have been coffining?