must preformat
Verbe régulier : preformat - preformated- preformated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must preformat
you must preformat
he must preformat
we must preformat
you must preformat
they must preformat 	I must be preformating
you must be preformating
he must be preformating
we must be preformating
you must be preformating
they must be preformating	I must have preformated
you must have preformated
he must have preformated
we must have preformated
you must have preformated
they must have preformated	I must have been preformating
you must have been preformating
he must have been preformating
we must have been preformating
you must have been preformating
they must have been preformating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't preformat
you mustn't preformat
he mustn't preformat
we mustn't preformat
you mustn't preformat
they mustn't preformat 	I mustn't be preformating
you mustn't be preformating
he mustn't be preformating
we mustn't be preformating
you mustn't be preformating
they mustn't be preformating	I mustn't have preformated
you mustn't have preformated
he mustn't have preformated
we mustn't have preformated
you mustn't have preformated
they mustn't have preformated	I mustn't have been preformating
you mustn't have been preformating
he mustn't have been preformating
we mustn't have been preformating
you mustn't have been preformating
they mustn't have been preformating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I preformat?
must you preformat?
must he preformat?
must we preformat?
must you preformat?
must they preformat? 	must I be preformating?
must you be preformating?
must he be preformating?
must we be preformating?
must you be preformating?
must they be preformating? 	must I have preformated?
must you have preformated?
must he have preformated?
must we have preformated?
must you have preformated?
must they have preformated? 	must I have been preformating?
must you have been preformating?
must he have been preformating?
must we have been preformating?
must you have been preformating?
must they have been preformating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I preformat?
mustn't you preformat?
mustn't he preformat?
mustn't we preformat?
mustn't you preformat?
mustn't they preformat? 	mustn't I be preformating?
mustn't you be preformating?
mustn't he be preformating?
mustn't we be preformating?
mustn't you be preformating?
mustn't they be preformating? 	mustn't I have preformated?
mustn't you have preformated?
mustn't he have preformated?
mustn't we have preformated?
mustn't you have preformated?
mustn't they have preformated? 	mustn't I have been preformating?
mustn't you have been preformating?
mustn't he have been preformating?
mustn't we have been preformating?
mustn't you have been preformating?
mustn't they have been preformating?