English verb conjugation
MUST SMELT

Regular verb: smelt - smelted - smelted

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I mustn't smelt you mustn't smelt he mustn't smelt we mustn't smelt you mustn't smelt they mustn't smelt	I mustn't be smelting you mustn't be smelting he mustn't be smelting we mustn't be smelting you mustn't be smelting they mustn't be smelting
Perfect	V-ing perfect
I mustn't have smelted you mustn't have smelted he mustn't have smelted we mustn't have smelted you mustn't have smelted they mustn't have smelted	I mustn't have been smelting you mustn't have been smelting he mustn't have been smelting we mustn't have been smelting you mustn't have been smelting they mustn't have been smelting

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
mustn't I smelt? mustn't you smelt? mustn't he smelt? mustn't we smelt? mustn't you smelt? mustn't they smelt?	mustn't I be smelting? mustn't you be smelting? mustn't he be smelting? mustn't we be smelting? mustn't you be smelting? mustn't they be smelting?
Perfect	V-ing perfect
mustn't I have smelted? mustn't you have smelted? mustn't he have smelted? mustn't we have smelted? mustn't you have smelted? mustn't they have smelted?	mustn't I have been smelting? mustn't you have been smelting? mustn't he have been smelting? mustn't we have been smelting? mustn't you have been smelting? mustn't they have been smelting?