must weatherstrip
Verbe régulier : weatherstrip - weatherstriped- weatherstriped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must weatherstrip
you must weatherstrip
he must weatherstrip
we must weatherstrip
you must weatherstrip
they must weatherstrip 	I must be weatherstriping
you must be weatherstriping
he must be weatherstriping
we must be weatherstriping
you must be weatherstriping
they must be weatherstriping	I must have weatherstriped
you must have weatherstriped
he must have weatherstriped
we must have weatherstriped
you must have weatherstriped
they must have weatherstriped	I must have been weatherstriping
you must have been weatherstriping
he must have been weatherstriping
we must have been weatherstriping
you must have been weatherstriping
they must have been weatherstriping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't weatherstrip
you mustn't weatherstrip
he mustn't weatherstrip
we mustn't weatherstrip
you mustn't weatherstrip
they mustn't weatherstrip 	I mustn't be weatherstriping
you mustn't be weatherstriping
he mustn't be weatherstriping
we mustn't be weatherstriping
you mustn't be weatherstriping
they mustn't be weatherstriping	I mustn't have weatherstriped
you mustn't have weatherstriped
he mustn't have weatherstriped
we mustn't have weatherstriped
you mustn't have weatherstriped
they mustn't have weatherstriped	I mustn't have been weatherstriping
you mustn't have been weatherstriping
he mustn't have been weatherstriping
we mustn't have been weatherstriping
you mustn't have been weatherstriping
they mustn't have been weatherstriping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I weatherstrip?
must you weatherstrip?
must he weatherstrip?
must we weatherstrip?
must you weatherstrip?
must they weatherstrip? 	must I be weatherstriping?
must you be weatherstriping?
must he be weatherstriping?
must we be weatherstriping?
must you be weatherstriping?
must they be weatherstriping? 	must I have weatherstriped?
must you have weatherstriped?
must he have weatherstriped?
must we have weatherstriped?
must you have weatherstriped?
must they have weatherstriped? 	must I have been weatherstriping?
must you have been weatherstriping?
must he have been weatherstriping?
must we have been weatherstriping?
must you have been weatherstriping?
must they have been weatherstriping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I weatherstrip?
mustn't you weatherstrip?
mustn't he weatherstrip?
mustn't we weatherstrip?
mustn't you weatherstrip?
mustn't they weatherstrip? 	mustn't I be weatherstriping?
mustn't you be weatherstriping?
mustn't he be weatherstriping?
mustn't we be weatherstriping?
mustn't you be weatherstriping?
mustn't they be weatherstriping? 	mustn't I have weatherstriped?
mustn't you have weatherstriped?
mustn't he have weatherstriped?
mustn't we have weatherstriped?
mustn't you have weatherstriped?
mustn't they have weatherstriped? 	mustn't I have been weatherstriping?
mustn't you have been weatherstriping?
mustn't he have been weatherstriping?
mustn't we have been weatherstriping?
mustn't you have been weatherstriping?
mustn't they have been weatherstriping?