English verb conjugation
COULD IMPALE

Regular verb: impale - impaled - impaled

Affirmation

Simple form	V-ing form
I could impale you could impale he could impale we could impale you could impale they could impale	I could be impaling you could be impaling he could be impaling we could be impaling you could be impaling they could be impaling
Perfect	V-ing perfect
I could have impaled you could have impaled he could have impaled we could have impaled you could have impaled they could have impaled	I could have been impaling you could have been impaling he could have been impaling we could have been impaling you could have been impaling they could have been impaling

Negation

Simple form	V-ing form
I could not impale you could not impale he could not impale we could not impale you could not impale they could not impale	I could not be impaling you could not be impaling he could not be impaling we could not be impaling you could not be impaling they could not be impaling
Perfect	V-ing perfect
I could not have impaled you could not have impaled he could not have impaled we could not have impaled you could not have impaled they could not have impaled	I could not have been impaling you could not have been impaling he could not have been impaling we could not have been impaling you could not have been impaling they could not have been impaling

Interrogative form

Simple form	V-ing form
could I impale? could you impale? could he impale? could we impale? could you impale? could they impale?	could I be impaling? could you be impaling? could he be impaling? could we be impaling? could you be impaling? could they be impaling?
Perfect	V-ing perfect
could I have impaled? could you have impaled? could he have impaled? could we have impaled? could you have impaled? could they have impaled?	could I have been impaling? could you have been impaling? could he have been impaling? could we have been impaling? could you have been impaling? could they have been impaling?

Interro-negative form

Simple form	V-ing form
could I not impale? could you not impale? could he not impale? could we not impale? could you not impale? could they not impale?	could I not be impaling? could you not be impaling? could he not be impaling? could we not be impaling? could you not be impaling? could they not be impaling?
Perfect	V-ing perfect
could I not have impaled? could you not have impaled? could he not have impaled? could we not have impaled? could you not have impaled? could they not have impaled?	could I not have been impaling? could you not have been impaling? could he not have been impaling? could we not have been impaling? could you not have been impaling? could they not have been impaling?