English verb conjugation
COULD BLACKJACK

Regular verb: blackjack - blackjacked - blackjacked

Affirmation

Simple form	V-ing form
I could blackjack you could blackjack he could blackjack we could blackjack you could blackjack they could blackjack	I could be blackjacking you could be blackjacking he could be blackjacking we could be blackjacking you could be blackjacking they could be blackjacking
Perfect	V-ing perfect
I could have blackjacked you could have blackjacked he could have blackjacked we could have blackjacked you could have blackjacked they could have blackjacked	I could have been blackjacking you could have been blackjacking he could have been blackjacking we could have been blackjacking you could have been blackjacking they could have been blackjacking

Negation

Simple form	V-ing form
I couldn't blackjack you couldn't blackjack he couldn't blackjack we couldn't blackjack you couldn't blackjack they couldn't blackjack	I couldn't be blackjacking you couldn't be blackjacking he couldn't be blackjacking we couldn't be blackjacking you couldn't be blackjacking they couldn't be blackjacking
Perfect	V-ing perfect
I couldn't have blackjacked you couldn't have blackjacked he couldn't have blackjacked we couldn't have blackjacked you couldn't have blackjacked they couldn't have blackjacked	I couldn't have been blackjacking you couldn't have been blackjacking he couldn't have been blackjacking we couldn't have been blackjacking you couldn't have been blackjacking they couldn't have been blackjacking

Interrogative form

Simple form	V-ing form
could I blackjack? could you blackjack? could he blackjack? could we blackjack? could you blackjack? could they blackjack?	could I be blackjacking? could you be blackjacking? could he be blackjacking? could we be blackjacking? could you be blackjacking? could they be blackjacking?
Perfect	V-ing perfect
could I have blackjacked? could you have blackjacked? could he have blackjacked? could we have blackjacked? could you have blackjacked? could they have blackjacked?	could I have been blackjacking? could you have been blackjacking? could he have been blackjacking? could we have been blackjacking? could you have been blackjacking? could they have been blackjacking?

Interro-negative form

Simple form	V-ing form
couldn't I blackjack? couldn't you blackjack? couldn't he blackjack? couldn't we blackjack? couldn't you blackjack? couldn't they blackjack?	couldn't I be blackjacking? couldn't you be blackjacking? couldn't he be blackjacking? couldn't we be blackjacking? couldn't you be blackjacking? couldn't they be blackjacking?
Perfect	V-ing perfect
couldn't I have blackjacked? couldn't you have blackjacked? couldn't he have blackjacked? couldn't we have blackjacked? couldn't you have blackjacked? couldn't they have blackjacked?	couldn't I have been blackjacking? couldn't you have been blackjacking? couldn't he have been blackjacking? couldn't we have been blackjacking? couldn't you have been blackjacking? couldn't they have been blackjacking?