English verb conjugation
MUST PLUNGE

Regular verb: plunge - plunged - plunged

Affirmation

Simple form	V-ing form
I must plunge you must plunge he must plunge we must plunge you must plunge they must plunge	I must be plunging you must be plunging he must be plunging we must be plunging you must be plunging they must be plunging
Perfect	V-ing perfect
I must have plunged you must have plunged he must have plunged we must have plunged you must have plunged they must have plunged	I must have been plunging you must have been plunging he must have been plunging we must have been plunging you must have been plunging they must have been plunging

Negation

Simple form	V-ing form
I mustn't plunge you mustn't plunge he mustn't plunge we mustn't plunge you mustn't plunge they mustn't plunge	I mustn't be plunging you mustn't be plunging he mustn't be plunging we mustn't be plunging you mustn't be plunging they mustn't be plunging
Perfect	V-ing perfect
I mustn't have plunged you mustn't have plunged he mustn't have plunged we mustn't have plunged you mustn't have plunged they mustn't have plunged	I mustn't have been plunging you mustn't have been plunging he mustn't have been plunging we mustn't have been plunging you mustn't have been plunging they mustn't have been plunging

Interrogative form

Simple form	V-ing form
must I plunge? must you plunge? must he plunge? must we plunge? must you plunge? must they plunge?	must I be plunging? must you be plunging? must he be plunging? must we be plunging? must you be plunging? must they be plunging?
Perfect	V-ing perfect
must I have plunged? must you have plunged? must he have plunged? must we have plunged? must you have plunged? must they have plunged?	must I have been plunging? must you have been plunging? must he have been plunging? must we have been plunging? must you have been plunging? must they have been plunging?

Interro-negative form

Simple form	V-ing form
mustn't I plunge? mustn't you plunge? mustn't he plunge? mustn't we plunge? mustn't you plunge? mustn't they plunge?	mustn't I be plunging? mustn't you be plunging? mustn't he be plunging? mustn't we be plunging? mustn't you be plunging? mustn't they be plunging?
Perfect	V-ing perfect
mustn't I have plunged? mustn't you have plunged? mustn't he have plunged? mustn't we have plunged? mustn't you have plunged? mustn't they have plunged?	mustn't I have been plunging? mustn't you have been plunging? mustn't he have been plunging? mustn't we have been plunging? mustn't you have been plunging? mustn't they have been plunging?