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 couldn't impale you couldn't impale he couldn't impale we couldn't impale you couldn't impale they couldn't impale	I couldn't be impaling you couldn't be impaling he couldn't be impaling we couldn't be impaling you couldn't be impaling they couldn't be impaling
Perfect	V-ing perfect
I couldn't have impaled you couldn't have impaled he couldn't have impaled we couldn't have impaled you couldn't have impaled they couldn't have impaled	I couldn't have been impaling you couldn't have been impaling he couldn't have been impaling we couldn't have been impaling you couldn't have been impaling they couldn't 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
couldn't I impale? couldn't you impale? couldn't he impale? couldn't we impale? couldn't you impale? couldn't they impale?	couldn't I be impaling? couldn't you be impaling? couldn't he be impaling? couldn't we be impaling? couldn't you be impaling? couldn't they be impaling?
Perfect	V-ing perfect
couldn't I have impaled? couldn't you have impaled? couldn't he have impaled? couldn't we have impaled? couldn't you have impaled? couldn't they have impaled?	couldn't I have been impaling? couldn't you have been impaling? couldn't he have been impaling? couldn't we have been impaling? couldn't you have been impaling? couldn't they have been impaling?