must smatter
Regular verb: smatter - smattered- smattered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must smatter
you must smatter
she must smatter
we must smatter
you must smatter
they must smatter 	I must be smattering
you must be smattering
she must be smattering
we must be smattering
you must be smattering
they must be smattering	I must have smattered
you must have smattered
she 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
she 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
she 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
she 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
she 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
she 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 she smatter?
must we smatter?
must you smatter?
must they smatter? 	must I be smattering?
must you be smattering?
must she be smattering?
must we be smattering?
must you be smattering?
must they be smattering? 	must I have smattered?
must you have smattered?
must she 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 she 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 she 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 she 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 she 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 she have been smattering?
mustn't we have been smattering?
mustn't you have been smattering?
mustn't they have been smattering?