must coffin
Verbe régulier : coffin - coffined- coffined

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

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

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

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