must interfold
Verbe régulier : interfold - interfolded- interfolded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must interfold
you must interfold
she must interfold
we must interfold
you must interfold
they must interfold 	I must be interfolding
you must be interfolding
she must be interfolding
we must be interfolding
you must be interfolding
they must be interfolding	I must have interfolded
you must have interfolded
she must have interfolded
we must have interfolded
you must have interfolded
they must have interfolded	I must have been interfolding
you must have been interfolding
she must have been interfolding
we must have been interfolding
you must have been interfolding
they must have been interfolding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't interfold
you mustn't interfold
she mustn't interfold
we mustn't interfold
you mustn't interfold
they mustn't interfold 	I mustn't be interfolding
you mustn't be interfolding
she mustn't be interfolding
we mustn't be interfolding
you mustn't be interfolding
they mustn't be interfolding	I mustn't have interfolded
you mustn't have interfolded
she mustn't have interfolded
we mustn't have interfolded
you mustn't have interfolded
they mustn't have interfolded	I mustn't have been interfolding
you mustn't have been interfolding
she mustn't have been interfolding
we mustn't have been interfolding
you mustn't have been interfolding
they mustn't have been interfolding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I interfold?
must you interfold?
must she interfold?
must we interfold?
must you interfold?
must they interfold? 	must I be interfolding?
must you be interfolding?
must she be interfolding?
must we be interfolding?
must you be interfolding?
must they be interfolding? 	must I have interfolded?
must you have interfolded?
must she have interfolded?
must we have interfolded?
must you have interfolded?
must they have interfolded? 	must I have been interfolding?
must you have been interfolding?
must she have been interfolding?
must we have been interfolding?
must you have been interfolding?
must they have been interfolding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I interfold?
mustn't you interfold?
mustn't she interfold?
mustn't we interfold?
mustn't you interfold?
mustn't they interfold? 	mustn't I be interfolding?
mustn't you be interfolding?
mustn't she be interfolding?
mustn't we be interfolding?
mustn't you be interfolding?
mustn't they be interfolding? 	mustn't I have interfolded?
mustn't you have interfolded?
mustn't she have interfolded?
mustn't we have interfolded?
mustn't you have interfolded?
mustn't they have interfolded? 	mustn't I have been interfolding?
mustn't you have been interfolding?
mustn't she have been interfolding?
mustn't we have been interfolding?
mustn't you have been interfolding?
mustn't they have been interfolding?