must class
Verbe régulier : class - classed- classed
Traduction française : classer - classifier 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must class
you must class
he must class
we must class
you must class
they must class 	I must be classing
you must be classing
he must be classing
we must be classing
you must be classing
they must be classing	I must have classed
you must have classed
he must have classed
we must have classed
you must have classed
they must have classed	I must have been classing
you must have been classing
he must have been classing
we must have been classing
you must have been classing
they must have been classing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't class
you mustn't class
he mustn't class
we mustn't class
you mustn't class
they mustn't class 	I mustn't be classing
you mustn't be classing
he mustn't be classing
we mustn't be classing
you mustn't be classing
they mustn't be classing	I mustn't have classed
you mustn't have classed
he mustn't have classed
we mustn't have classed
you mustn't have classed
they mustn't have classed	I mustn't have been classing
you mustn't have been classing
he mustn't have been classing
we mustn't have been classing
you mustn't have been classing
they mustn't have been classing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I class?
must you class?
must he class?
must we class?
must you class?
must they class? 	must I be classing?
must you be classing?
must he be classing?
must we be classing?
must you be classing?
must they be classing? 	must I have classed?
must you have classed?
must he have classed?
must we have classed?
must you have classed?
must they have classed? 	must I have been classing?
must you have been classing?
must he have been classing?
must we have been classing?
must you have been classing?
must they have been classing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I class?
mustn't you class?
mustn't he class?
mustn't we class?
mustn't you class?
mustn't they class? 	mustn't I be classing?
mustn't you be classing?
mustn't he be classing?
mustn't we be classing?
mustn't you be classing?
mustn't they be classing? 	mustn't I have classed?
mustn't you have classed?
mustn't he have classed?
mustn't we have classed?
mustn't you have classed?
mustn't they have classed? 	mustn't I have been classing?
mustn't you have been classing?
mustn't he have been classing?
mustn't we have been classing?
mustn't you have been classing?
mustn't they have been classing?