English verb conjugation
COULD IMPALE

Regular verb: impale - impaled - impaled

Affirmation

Simple form	V-ing form
I could impale you could impale she could impale we could impale you could impale they could impale	I could be impaling you could be impaling she 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 she 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 she 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 she 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 she 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 she 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 she 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 she impale? could we impale? could you impale? could they impale?	could I be impaling? could you be impaling? could she 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 she 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 she 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 she 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 she 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 she 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 she have been impaling? couldn't we have been impaling? couldn't you have been impaling? couldn't they have been impaling?