must fun
Verbe régulier : fun - funed- funed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must fun
you must fun
she must fun
we must fun
you must fun
they must fun 	I must be funing
you must be funing
she must be funing
we must be funing
you must be funing
they must be funing	I must have funed
you must have funed
she must have funed
we must have funed
you must have funed
they must have funed	I must have been funing
you must have been funing
she must have been funing
we must have been funing
you must have been funing
they must have been funing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't fun
you mustn't fun
she mustn't fun
we mustn't fun
you mustn't fun
they mustn't fun 	I mustn't be funing
you mustn't be funing
she mustn't be funing
we mustn't be funing
you mustn't be funing
they mustn't be funing	I mustn't have funed
you mustn't have funed
she mustn't have funed
we mustn't have funed
you mustn't have funed
they mustn't have funed	I mustn't have been funing
you mustn't have been funing
she mustn't have been funing
we mustn't have been funing
you mustn't have been funing
they mustn't have been funing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I fun?
must you fun?
must she fun?
must we fun?
must you fun?
must they fun? 	must I be funing?
must you be funing?
must she be funing?
must we be funing?
must you be funing?
must they be funing? 	must I have funed?
must you have funed?
must she have funed?
must we have funed?
must you have funed?
must they have funed? 	must I have been funing?
must you have been funing?
must she have been funing?
must we have been funing?
must you have been funing?
must they have been funing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I fun?
mustn't you fun?
mustn't she fun?
mustn't we fun?
mustn't you fun?
mustn't they fun? 	mustn't I be funing?
mustn't you be funing?
mustn't she be funing?
mustn't we be funing?
mustn't you be funing?
mustn't they be funing? 	mustn't I have funed?
mustn't you have funed?
mustn't she have funed?
mustn't we have funed?
mustn't you have funed?
mustn't they have funed? 	mustn't I have been funing?
mustn't you have been funing?
mustn't she have been funing?
mustn't we have been funing?
mustn't you have been funing?
mustn't they have been funing?