must smash
Regular verb: smash - smashed- smashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must smash
you must smash
she must smash
we must smash
you must smash
they must smash 	I must be smashing
you must be smashing
she must be smashing
we must be smashing
you must be smashing
they must be smashing	I must have smashed
you must have smashed
she must have smashed
we must have smashed
you must have smashed
they must have smashed	I must have been smashing
you must have been smashing
she must have been smashing
we must have been smashing
you must have been smashing
they must have been smashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not smash
you must not smash
she must not smash
we must not smash
you must not smash
they must not smash 	I must not be smashing
you must not be smashing
she must not be smashing
we must not be smashing
you must not be smashing
they must not be smashing	I must not have smashed
you must not have smashed
she must not have smashed
we must not have smashed
you must not have smashed
they must not have smashed	I must not have been smashing
you must not have been smashing
she must not have been smashing
we must not have been smashing
you must not have been smashing
they must not have been smashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I smash?
must you smash?
must she smash?
must we smash?
must you smash?
must they smash? 	must I be smashing?
must you be smashing?
must she be smashing?
must we be smashing?
must you be smashing?
must they be smashing? 	must I have smashed?
must you have smashed?
must she have smashed?
must we have smashed?
must you have smashed?
must they have smashed? 	must I have been smashing?
must you have been smashing?
must she have been smashing?
must we have been smashing?
must you have been smashing?
must they have been smashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not smash?
must you not smash?
must she not smash?
must we not smash?
must you not smash?
must they not smash? 	must I not be smashing?
must you not be smashing?
must she not be smashing?
must we not be smashing?
must you not be smashing?
must they not be smashing? 	must I not have smashed?
must you not have smashed?
must she not have smashed?
must we not have smashed?
must you not have smashed?
must they not have smashed? 	must I not have been smashing?
must you not have been smashing?
must she not have been smashing?
must we not have been smashing?
must you not have been smashing?
must they not have been smashing?