English verb conjugation
COULD CARD

Regular verb: card - carded - carded

Affirmation

Simple form	V-ing form
I could card you could card he could card we could card you could card they could card	I could be carding you could be carding he could be carding we could be carding you could be carding they could be carding
Perfect	V-ing perfect
I could have carded you could have carded he could have carded we could have carded you could have carded they could have carded	I could have been carding you could have been carding he could have been carding we could have been carding you could have been carding they could have been carding

Negation

Simple form	V-ing form
I could not card you could not card he could not card we could not card you could not card they could not card	I could not be carding you could not be carding he could not be carding we could not be carding you could not be carding they could not be carding
Perfect	V-ing perfect
I could not have carded you could not have carded he could not have carded we could not have carded you could not have carded they could not have carded	I could not have been carding you could not have been carding he could not have been carding we could not have been carding you could not have been carding they could not have been carding

Interrogative form

Simple form	V-ing form
could I card? could you card? could he card? could we card? could you card? could they card?	could I be carding? could you be carding? could he be carding? could we be carding? could you be carding? could they be carding?
Perfect	V-ing perfect
could I have carded? could you have carded? could he have carded? could we have carded? could you have carded? could they have carded?	could I have been carding? could you have been carding? could he have been carding? could we have been carding? could you have been carding? could they have been carding?

Interro-negative form

Simple form	V-ing form
could I not card? could you not card? could he not card? could we not card? could you not card? could they not card?	could I not be carding? could you not be carding? could he not be carding? could we not be carding? could you not be carding? could they not be carding?
Perfect	V-ing perfect
could I not have carded? could you not have carded? could he not have carded? could we not have carded? could you not have carded? could they not have carded?	could I not have been carding? could you not have been carding? could he not have been carding? could we not have been carding? could you not have been carding? could they not have been carding?