English verb conjugation
COULD SLICK

Regular verb: slick - slicked - slicked

Affirmation

Simple form	V-ing form
I could slick you could slick he could slick we could slick you could slick they could slick	I could be slicking you could be slicking he could be slicking we could be slicking you could be slicking they could be slicking
Perfect	V-ing perfect
I could have slicked you could have slicked he could have slicked we could have slicked you could have slicked they could have slicked	I could have been slicking you could have been slicking he could have been slicking we could have been slicking you could have been slicking they could have been slicking

Negation

Simple form	V-ing form
I couldn't slick you couldn't slick he couldn't slick we couldn't slick you couldn't slick they couldn't slick	I couldn't be slicking you couldn't be slicking he couldn't be slicking we couldn't be slicking you couldn't be slicking they couldn't be slicking
Perfect	V-ing perfect
I couldn't have slicked you couldn't have slicked he couldn't have slicked we couldn't have slicked you couldn't have slicked they couldn't have slicked	I couldn't have been slicking you couldn't have been slicking he couldn't have been slicking we couldn't have been slicking you couldn't have been slicking they couldn't have been slicking

Interrogative form

Simple form	V-ing form
could I slick? could you slick? could he slick? could we slick? could you slick? could they slick?	could I be slicking? could you be slicking? could he be slicking? could we be slicking? could you be slicking? could they be slicking?
Perfect	V-ing perfect
could I have slicked? could you have slicked? could he have slicked? could we have slicked? could you have slicked? could they have slicked?	could I have been slicking? could you have been slicking? could he have been slicking? could we have been slicking? could you have been slicking? could they have been slicking?

Interro-negative form

Simple form	V-ing form
couldn't I slick? couldn't you slick? couldn't he slick? couldn't we slick? couldn't you slick? couldn't they slick?	couldn't I be slicking? couldn't you be slicking? couldn't he be slicking? couldn't we be slicking? couldn't you be slicking? couldn't they be slicking?
Perfect	V-ing perfect
couldn't I have slicked? couldn't you have slicked? couldn't he have slicked? couldn't we have slicked? couldn't you have slicked? couldn't they have slicked?	couldn't I have been slicking? couldn't you have been slicking? couldn't he have been slicking? couldn't we have been slicking? couldn't you have been slicking? couldn't they have been slicking?