English verb conjugation
MUST BLUFF

Regular verb: bluff - bluffed - bluffed

Affirmation

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

Negation

Simple form	V-ing form
I must not bluff you must not bluff she must not bluff we must not bluff you must not bluff they must not bluff	I must not be bluffing you must not be bluffing she must not be bluffing we must not be bluffing you must not be bluffing they must not be bluffing
Perfect	V-ing perfect
I must not have bluffed you must not have bluffed she must not have bluffed we must not have bluffed you must not have bluffed they must not have bluffed	I must not have been bluffing you must not have been bluffing she must not have been bluffing we must not have been bluffing you must not have been bluffing they must not have been bluffing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not bluff? must you not bluff? must she not bluff? must we not bluff? must you not bluff? must they not bluff?	must I not be bluffing? must you not be bluffing? must she not be bluffing? must we not be bluffing? must you not be bluffing? must they not be bluffing?
Perfect	V-ing perfect
must I not have bluffed? must you not have bluffed? must she not have bluffed? must we not have bluffed? must you not have bluffed? must they not have bluffed?	must I not have been bluffing? must you not have been bluffing? must she not have been bluffing? must we not have been bluffing? must you not have been bluffing? must they not have been bluffing?