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 couldn't slat you couldn't slat he couldn't slat we couldn't slat you couldn't slat they couldn't slat	I couldn't be slatting you couldn't be slatting he couldn't be slatting we couldn't be slatting you couldn't be slatting they couldn't be slatting
Perfect	V-ing perfect
I couldn't have slatted you couldn't have slatted he couldn't have slatted we couldn't have slatted you couldn't have slatted they couldn't have slatted	I couldn't have been slatting you couldn't have been slatting he couldn't have been slatting we couldn't have been slatting you couldn't have been slatting they couldn't 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
couldn't I slat? couldn't you slat? couldn't he slat? couldn't we slat? couldn't you slat? couldn't they slat?	couldn't I be slatting? couldn't you be slatting? couldn't he be slatting? couldn't we be slatting? couldn't you be slatting? couldn't they be slatting?
Perfect	V-ing perfect
couldn't I have slatted? couldn't you have slatted? couldn't he have slatted? couldn't we have slatted? couldn't you have slatted? couldn't they have slatted?	couldn't I have been slatting? couldn't you have been slatting? couldn't he have been slatting? couldn't we have been slatting? couldn't you have been slatting? couldn't they have been slatting?