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 could not coffin
you could not coffin
she could not coffin
we could not coffin
you could not coffin
they could not coffin 	I could not be coffining
you could not be coffining
she could not be coffining
we could not be coffining
you could not be coffining
they could not be coffining	I could not have coffined
you could not have coffined
she could not have coffined
we could not have coffined
you could not have coffined
they could not have coffined	I could not have been coffining
you could not have been coffining
she could not have been coffining
we could not have been coffining
you could not have been coffining
they could not 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 	
could I not coffin?
could you not coffin?
could she not coffin?
could we not coffin?
could you not coffin?
could they not coffin? 	could I not be coffining?
could you not be coffining?
could she not be coffining?
could we not be coffining?
could you not be coffining?
could they not be coffining? 	could I not have coffined?
could you not have coffined?
could she not have coffined?
could we not have coffined?
could you not have coffined?
could they not have coffined? 	could I not have been coffining?
could you not have been coffining?
could she not have been coffining?
could we not have been coffining?
could you not have been coffining?
could they not have been coffining?