English verb conjugation
COULD SMELT

Regular verb: smelt - smelted - smelted

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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