English verb conjugation
COULD ONE-UP

Regular verb: one-up - one-uped - one-uped

Affirmation

Simple form	V-ing form
I could one-up you could one-up he could one-up we could one-up you could one-up they could one-up	I could be one-uping you could be one-uping he could be one-uping we could be one-uping you could be one-uping they could be one-uping
Perfect	V-ing perfect
I could have one-uped you could have one-uped he could have one-uped we could have one-uped you could have one-uped they could have one-uped	I could have been one-uping you could have been one-uping he could have been one-uping we could have been one-uping you could have been one-uping they could have been one-uping

Negation

Simple form	V-ing form
I could not one-up you could not one-up he could not one-up we could not one-up you could not one-up they could not one-up	I could not be one-uping you could not be one-uping he could not be one-uping we could not be one-uping you could not be one-uping they could not be one-uping
Perfect	V-ing perfect
I could not have one-uped you could not have one-uped he could not have one-uped we could not have one-uped you could not have one-uped they could not have one-uped	I could not have been one-uping you could not have been one-uping he could not have been one-uping we could not have been one-uping you could not have been one-uping they could not have been one-uping

Interrogative form

Simple form	V-ing form
could I one-up? could you one-up? could he one-up? could we one-up? could you one-up? could they one-up?	could I be one-uping? could you be one-uping? could he be one-uping? could we be one-uping? could you be one-uping? could they be one-uping?
Perfect	V-ing perfect
could I have one-uped? could you have one-uped? could he have one-uped? could we have one-uped? could you have one-uped? could they have one-uped?	could I have been one-uping? could you have been one-uping? could he have been one-uping? could we have been one-uping? could you have been one-uping? could they have been one-uping?

Interro-negative form

Simple form	V-ing form
could I not one-up? could you not one-up? could he not one-up? could we not one-up? could you not one-up? could they not one-up?	could I not be one-uping? could you not be one-uping? could he not be one-uping? could we not be one-uping? could you not be one-uping? could they not be one-uping?
Perfect	V-ing perfect
could I not have one-uped? could you not have one-uped? could he not have one-uped? could we not have one-uped? could you not have one-uped? could they not have one-uped?	could I not have been one-uping? could you not have been one-uping? could he not have been one-uping? could we not have been one-uping? could you not have been one-uping? could they not have been one-uping?