must stopper
Regular verb: stopper - stoppered- stoppered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stopper
you must stopper
she must stopper
we must stopper
you must stopper
they must stopper 	I must be stoppering
you must be stoppering
she must be stoppering
we must be stoppering
you must be stoppering
they must be stoppering	I must have stoppered
you must have stoppered
she must have stoppered
we must have stoppered
you must have stoppered
they must have stoppered	I must have been stoppering
you must have been stoppering
she must have been stoppering
we must have been stoppering
you must have been stoppering
they must have been stoppering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't stopper
you mustn't stopper
she mustn't stopper
we mustn't stopper
you mustn't stopper
they mustn't stopper 	I mustn't be stoppering
you mustn't be stoppering
she mustn't be stoppering
we mustn't be stoppering
you mustn't be stoppering
they mustn't be stoppering	I mustn't have stoppered
you mustn't have stoppered
she mustn't have stoppered
we mustn't have stoppered
you mustn't have stoppered
they mustn't have stoppered	I mustn't have been stoppering
you mustn't have been stoppering
she mustn't have been stoppering
we mustn't have been stoppering
you mustn't have been stoppering
they mustn't have been stoppering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stopper?
must you stopper?
must she stopper?
must we stopper?
must you stopper?
must they stopper? 	must I be stoppering?
must you be stoppering?
must she be stoppering?
must we be stoppering?
must you be stoppering?
must they be stoppering? 	must I have stoppered?
must you have stoppered?
must she have stoppered?
must we have stoppered?
must you have stoppered?
must they have stoppered? 	must I have been stoppering?
must you have been stoppering?
must she have been stoppering?
must we have been stoppering?
must you have been stoppering?
must they have been stoppering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I stopper?
mustn't you stopper?
mustn't she stopper?
mustn't we stopper?
mustn't you stopper?
mustn't they stopper? 	mustn't I be stoppering?
mustn't you be stoppering?
mustn't she be stoppering?
mustn't we be stoppering?
mustn't you be stoppering?
mustn't they be stoppering? 	mustn't I have stoppered?
mustn't you have stoppered?
mustn't she have stoppered?
mustn't we have stoppered?
mustn't you have stoppered?
mustn't they have stoppered? 	mustn't I have been stoppering?
mustn't you have been stoppering?
mustn't she have been stoppering?
mustn't we have been stoppering?
mustn't you have been stoppering?
mustn't they have been stoppering?