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 could not flick you could not flick he could not flick we could not flick you could not flick they could not flick	I could not be flicking you could not be flicking he could not be flicking we could not be flicking you could not be flicking they could not be flicking
Perfect	V-ing perfect
I could not have flicked you could not have flicked he could not have flicked we could not have flicked you could not have flicked they could not have flicked	I could not have been flicking you could not have been flicking he could not have been flicking we could not have been flicking you could not have been flicking they could not 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
could I not flick? could you not flick? could he not flick? could we not flick? could you not flick? could they not flick?	could I not be flicking? could you not be flicking? could he not be flicking? could we not be flicking? could you not be flicking? could they not be flicking?
Perfect	V-ing perfect
could I not have flicked? could you not have flicked? could he not have flicked? could we not have flicked? could you not have flicked? could they not have flicked?	could I not have been flicking? could you not have been flicking? could he not have been flicking? could we not have been flicking? could you not have been flicking? could they not have been flicking?