English verb conjugation
COULD SLAT

Regular verb: slat - slatted - slatted

Affirmation

Simple form	V-ing form
I could slat you could slat he could slat we could slat you could slat they could slat	I could be slatting you could be slatting he could be slatting we could be slatting you could be slatting they could be slatting
Perfect	V-ing perfect
I could have slatted you could have slatted he could have slatted we could have slatted you could have slatted they could have slatted	I could have been slatting you could have been slatting he could have been slatting we could have been slatting you could have been slatting they could have been slatting

Negation

Simple form	V-ing form
I could not slat you could not slat he could not slat we could not slat you could not slat they could not slat	I could not be slatting you could not be slatting he could not be slatting we could not be slatting you could not be slatting they could not be slatting
Perfect	V-ing perfect
I could not have slatted you could not have slatted he could not have slatted we could not have slatted you could not have slatted they could not have slatted	I could not have been slatting you could not have been slatting he could not have been slatting we could not have been slatting you could not have been slatting they could not have been slatting

Interrogative form

Simple form	V-ing form
could I slat? could you slat? could he slat? could we slat? could you slat? could they slat?	could I be slatting? could you be slatting? could he be slatting? could we be slatting? could you be slatting? could they be slatting?
Perfect	V-ing perfect
could I have slatted? could you have slatted? could he have slatted? could we have slatted? could you have slatted? could they have slatted?	could I have been slatting? could you have been slatting? could he have been slatting? could we have been slatting? could you have been slatting? could they have been slatting?

Interro-negative form

Simple form	V-ing form
could I not slat? could you not slat? could he not slat? could we not slat? could you not slat? could they not slat?	could I not be slatting? could you not be slatting? could he not be slatting? could we not be slatting? could you not be slatting? could they not be slatting?
Perfect	V-ing perfect
could I not have slatted? could you not have slatted? could he not have slatted? could we not have slatted? could you not have slatted? could they not have slatted?	could I not have been slatting? could you not have been slatting? could he not have been slatting? could we not have been slatting? could you not have been slatting? could they not have been slatting?