English verb conjugation
COULD FLICK

Regular verb: flick - flicked - flicked

Affirmation

Simple form	V-ing form
I could flick you could flick he could flick we could flick you could flick they could flick	I could be flicking you could be flicking he could be flicking we could be flicking you could be flicking they could be flicking
Perfect	V-ing perfect
I could have flicked you could have flicked he could have flicked we could have flicked you could have flicked they could have flicked	I could have been flicking you could have been flicking he could have been flicking we could have been flicking you could have been flicking they could have been flicking

Negation

Simple form	V-ing form
I couldn't flick you couldn't flick he couldn't flick we couldn't flick you couldn't flick they couldn't flick	I couldn't be flicking you couldn't be flicking he couldn't be flicking we couldn't be flicking you couldn't be flicking they couldn't be flicking
Perfect	V-ing perfect
I couldn't have flicked you couldn't have flicked he couldn't have flicked we couldn't have flicked you couldn't have flicked they couldn't have flicked	I couldn't have been flicking you couldn't have been flicking he couldn't have been flicking we couldn't have been flicking you couldn't have been flicking they couldn't have been flicking

Interrogative form

Simple form	V-ing form
could I flick? could you flick? could he flick? could we flick? could you flick? could they flick?	could I be flicking? could you be flicking? could he be flicking? could we be flicking? could you be flicking? could they be flicking?
Perfect	V-ing perfect
could I have flicked? could you have flicked? could he have flicked? could we have flicked? could you have flicked? could they have flicked?	could I have been flicking? could you have been flicking? could he have been flicking? could we have been flicking? could you have been flicking? could they have been flicking?

Interro-negative form

Simple form	V-ing form
couldn't I flick? couldn't you flick? couldn't he flick? couldn't we flick? couldn't you flick? couldn't they flick?	couldn't I be flicking? couldn't you be flicking? couldn't he be flicking? couldn't we be flicking? couldn't you be flicking? couldn't they be flicking?
Perfect	V-ing perfect
couldn't I have flicked? couldn't you have flicked? couldn't he have flicked? couldn't we have flicked? couldn't you have flicked? couldn't they have flicked?	couldn't I have been flicking? couldn't you have been flicking? couldn't he have been flicking? couldn't we have been flicking? couldn't you have been flicking? couldn't they have been flicking?