English verb conjugation
MUST BLUFF

Regular verb: bluff - bluffed - bluffed

Affirmation

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

Interrogative form

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