English verb conjugation
COULD BLUFF

Regular verb: bluff - bluffed - bluffed

Affirmation

Simple form	V-ing form
I could bluff you could bluff he could bluff we could bluff you could bluff they could bluff	I could be bluffing you could be bluffing he could be bluffing we could be bluffing you could be bluffing they could be bluffing
Perfect	V-ing perfect
I could have bluffed you could have bluffed he could have bluffed we could have bluffed you could have bluffed they could have bluffed	I could have been bluffing you could have been bluffing he could have been bluffing we could have been bluffing you could have been bluffing they could have been bluffing

Negation

Simple form	V-ing form
I couldn't bluff you couldn't bluff he couldn't bluff we couldn't bluff you couldn't bluff they couldn't bluff	I couldn't be bluffing you couldn't be bluffing he couldn't be bluffing we couldn't be bluffing you couldn't be bluffing they couldn't be bluffing
Perfect	V-ing perfect
I couldn't have bluffed you couldn't have bluffed he couldn't have bluffed we couldn't have bluffed you couldn't have bluffed they couldn't have bluffed	I couldn't have been bluffing you couldn't have been bluffing he couldn't have been bluffing we couldn't have been bluffing you couldn't have been bluffing they couldn't have been bluffing

Interrogative form

Simple form	V-ing form
could I bluff? could you bluff? could he bluff? could we bluff? could you bluff? could they bluff?	could I be bluffing? could you be bluffing? could he be bluffing? could we be bluffing? could you be bluffing? could they be bluffing?
Perfect	V-ing perfect
could I have bluffed? could you have bluffed? could he have bluffed? could we have bluffed? could you have bluffed? could they have bluffed?	could I have been bluffing? could you have been bluffing? could he have been bluffing? could we have been bluffing? could you have been bluffing? could they have been bluffing?

Interro-negative form

Simple form	V-ing form
couldn't I bluff? couldn't you bluff? couldn't he bluff? couldn't we bluff? couldn't you bluff? couldn't they bluff?	couldn't I be bluffing? couldn't you be bluffing? couldn't he be bluffing? couldn't we be bluffing? couldn't you be bluffing? couldn't they be bluffing?
Perfect	V-ing perfect
couldn't I have bluffed? couldn't you have bluffed? couldn't he have bluffed? couldn't we have bluffed? couldn't you have bluffed? couldn't they have bluffed?	couldn't I have been bluffing? couldn't you have been bluffing? couldn't he have been bluffing? couldn't we have been bluffing? couldn't you have been bluffing? couldn't they have been bluffing?