English verb conjugation
COULD PIE

Regular verb: pie - pied - pied

Affirmation

Simple form	V-ing form
I could pie you could pie he could pie we could pie you could pie they could pie	I could be pying you could be pying he could be pying we could be pying you could be pying they could be pying
Perfect	V-ing perfect
I could have pied you could have pied he could have pied we could have pied you could have pied they could have pied	I could have been pying you could have been pying he could have been pying we could have been pying you could have been pying they could have been pying

Negation

Simple form	V-ing form
I could not pie you could not pie he could not pie we could not pie you could not pie they could not pie	I could not be pying you could not be pying he could not be pying we could not be pying you could not be pying they could not be pying
Perfect	V-ing perfect
I could not have pied you could not have pied he could not have pied we could not have pied you could not have pied they could not have pied	I could not have been pying you could not have been pying he could not have been pying we could not have been pying you could not have been pying they could not have been pying

Interrogative form

Simple form	V-ing form
could I pie? could you pie? could he pie? could we pie? could you pie? could they pie?	could I be pying? could you be pying? could he be pying? could we be pying? could you be pying? could they be pying?
Perfect	V-ing perfect
could I have pied? could you have pied? could he have pied? could we have pied? could you have pied? could they have pied?	could I have been pying? could you have been pying? could he have been pying? could we have been pying? could you have been pying? could they have been pying?

Interro-negative form

Simple form	V-ing form
could I not pie? could you not pie? could he not pie? could we not pie? could you not pie? could they not pie?	could I not be pying? could you not be pying? could he not be pying? could we not be pying? could you not be pying? could they not be pying?
Perfect	V-ing perfect
could I not have pied? could you not have pied? could he not have pied? could we not have pied? could you not have pied? could they not have pied?	could I not have been pying? could you not have been pying? could he not have been pying? could we not have been pying? could you not have been pying? could they not have been pying?