English verb conjugation
COULD PIE

Regular verb: pie - pied - pied

Affirmation

Simple form	V-ing form
I could pie you could pie she could pie we could pie you could pie they could pie	I could be pying you could be pying she 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 she 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 she 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 couldn't pie you couldn't pie she couldn't pie we couldn't pie you couldn't pie they couldn't pie	I couldn't be pying you couldn't be pying she couldn't be pying we couldn't be pying you couldn't be pying they couldn't be pying
Perfect	V-ing perfect
I couldn't have pied you couldn't have pied she couldn't have pied we couldn't have pied you couldn't have pied they couldn't have pied	I couldn't have been pying you couldn't have been pying she couldn't have been pying we couldn't have been pying you couldn't have been pying they couldn't have been pying

Interrogative form

Simple form	V-ing form
could I pie? could you pie? could she pie? could we pie? could you pie? could they pie?	could I be pying? could you be pying? could she 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 she 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 she 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
couldn't I pie? couldn't you pie? couldn't she pie? couldn't we pie? couldn't you pie? couldn't they pie?	couldn't I be pying? couldn't you be pying? couldn't she be pying? couldn't we be pying? couldn't you be pying? couldn't they be pying?
Perfect	V-ing perfect
couldn't I have pied? couldn't you have pied? couldn't she have pied? couldn't we have pied? couldn't you have pied? couldn't they have pied?	couldn't I have been pying? couldn't you have been pying? couldn't she have been pying? couldn't we have been pying? couldn't you have been pying? couldn't they have been pying?