must smatter
Regular verb: smatter - smattered- smattered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must smatter
you must smatter
he must smatter
we must smatter
you must smatter
they must smatter 	I must be smattering
you must be smattering
he must be smattering
we must be smattering
you must be smattering
they must be smattering	I must have smattered
you must have smattered
he must have smattered
we must have smattered
you must have smattered
they must have smattered	I must have been smattering
you must have been smattering
he must have been smattering
we must have been smattering
you must have been smattering
they must have been smattering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't smatter
you mustn't smatter
he mustn't smatter
we mustn't smatter
you mustn't smatter
they mustn't smatter 	I mustn't be smattering
you mustn't be smattering
he mustn't be smattering
we mustn't be smattering
you mustn't be smattering
they mustn't be smattering	I mustn't have smattered
you mustn't have smattered
he mustn't have smattered
we mustn't have smattered
you mustn't have smattered
they mustn't have smattered	I mustn't have been smattering
you mustn't have been smattering
he mustn't have been smattering
we mustn't have been smattering
you mustn't have been smattering
they mustn't have been smattering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I smatter?
must you smatter?
must he smatter?
must we smatter?
must you smatter?
must they smatter? 	must I be smattering?
must you be smattering?
must he be smattering?
must we be smattering?
must you be smattering?
must they be smattering? 	must I have smattered?
must you have smattered?
must he have smattered?
must we have smattered?
must you have smattered?
must they have smattered? 	must I have been smattering?
must you have been smattering?
must he have been smattering?
must we have been smattering?
must you have been smattering?
must they have been smattering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I smatter?
mustn't you smatter?
mustn't he smatter?
mustn't we smatter?
mustn't you smatter?
mustn't they smatter? 	mustn't I be smattering?
mustn't you be smattering?
mustn't he be smattering?
mustn't we be smattering?
mustn't you be smattering?
mustn't they be smattering? 	mustn't I have smattered?
mustn't you have smattered?
mustn't he have smattered?
mustn't we have smattered?
mustn't you have smattered?
mustn't they have smattered? 	mustn't I have been smattering?
mustn't you have been smattering?
mustn't he have been smattering?
mustn't we have been smattering?
mustn't you have been smattering?
mustn't they have been smattering?