must zipper
Verbe régulier : zipper - zippered- zippered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must zipper
you must zipper
he must zipper
we must zipper
you must zipper
they must zipper 	I must be zippering
you must be zippering
he must be zippering
we must be zippering
you must be zippering
they must be zippering	I must have zippered
you must have zippered
he must have zippered
we must have zippered
you must have zippered
they must have zippered	I must have been zippering
you must have been zippering
he must have been zippering
we must have been zippering
you must have been zippering
they must have been zippering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't zipper
you mustn't zipper
he mustn't zipper
we mustn't zipper
you mustn't zipper
they mustn't zipper 	I mustn't be zippering
you mustn't be zippering
he mustn't be zippering
we mustn't be zippering
you mustn't be zippering
they mustn't be zippering	I mustn't have zippered
you mustn't have zippered
he mustn't have zippered
we mustn't have zippered
you mustn't have zippered
they mustn't have zippered	I mustn't have been zippering
you mustn't have been zippering
he mustn't have been zippering
we mustn't have been zippering
you mustn't have been zippering
they mustn't have been zippering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I zipper?
must you zipper?
must he zipper?
must we zipper?
must you zipper?
must they zipper? 	must I be zippering?
must you be zippering?
must he be zippering?
must we be zippering?
must you be zippering?
must they be zippering? 	must I have zippered?
must you have zippered?
must he have zippered?
must we have zippered?
must you have zippered?
must they have zippered? 	must I have been zippering?
must you have been zippering?
must he have been zippering?
must we have been zippering?
must you have been zippering?
must they have been zippering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I zipper?
mustn't you zipper?
mustn't he zipper?
mustn't we zipper?
mustn't you zipper?
mustn't they zipper? 	mustn't I be zippering?
mustn't you be zippering?
mustn't he be zippering?
mustn't we be zippering?
mustn't you be zippering?
mustn't they be zippering? 	mustn't I have zippered?
mustn't you have zippered?
mustn't he have zippered?
mustn't we have zippered?
mustn't you have zippered?
mustn't they have zippered? 	mustn't I have been zippering?
mustn't you have been zippering?
mustn't he have been zippering?
mustn't we have been zippering?
mustn't you have been zippering?
mustn't they have been zippering?