must smelt
Regular verb: smelt - smelted- smelted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must smelt
you must smelt
he must smelt
we must smelt
you must smelt
they must smelt 	I must be smelting
you must be smelting
he must be smelting
we must be smelting
you must be smelting
they must be smelting	I must have smelted
you must have smelted
he must have smelted
we must have smelted
you must have smelted
they must have smelted	I must have been smelting
you must have been smelting
he must have been smelting
we must have been smelting
you must have been smelting
they must have been smelting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not smelt
you must not smelt
he must not smelt
we must not smelt
you must not smelt
they must not smelt 	I must not be smelting
you must not be smelting
he must not be smelting
we must not be smelting
you must not be smelting
they must not be smelting	I must not have smelted
you must not have smelted
he must not have smelted
we must not have smelted
you must not have smelted
they must not have smelted	I must not have been smelting
you must not have been smelting
he must not have been smelting
we must not have been smelting
you must not have been smelting
they must not have been smelting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I smelt?
must you smelt?
must he smelt?
must we smelt?
must you smelt?
must they smelt? 	must I be smelting?
must you be smelting?
must he be smelting?
must we be smelting?
must you be smelting?
must they be smelting? 	must I have smelted?
must you have smelted?
must he have smelted?
must we have smelted?
must you have smelted?
must they have smelted? 	must I have been smelting?
must you have been smelting?
must he have been smelting?
must we have been smelting?
must you have been smelting?
must they have been smelting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not smelt?
must you not smelt?
must he not smelt?
must we not smelt?
must you not smelt?
must they not smelt? 	must I not be smelting?
must you not be smelting?
must he not be smelting?
must we not be smelting?
must you not be smelting?
must they not be smelting? 	must I not have smelted?
must you not have smelted?
must he not have smelted?
must we not have smelted?
must you not have smelted?
must they not have smelted? 	must I not have been smelting?
must you not have been smelting?
must he not have been smelting?
must we not have been smelting?
must you not have been smelting?
must they not have been smelting?