English verb conjugation
MUST GIG

Regular verb: gig - giged - giged

Affirmation

Simple form	V-ing form
I must gig you must gig he must gig we must gig you must gig they must gig	I must be giging you must be giging he must be giging we must be giging you must be giging they must be giging
Perfect	V-ing perfect
I must have giged you must have giged he must have giged we must have giged you must have giged they must have giged	I must have been giging you must have been giging he must have been giging we must have been giging you must have been giging they must have been giging

Negation

Simple form	V-ing form
I mustn't gig you mustn't gig he mustn't gig we mustn't gig you mustn't gig they mustn't gig	I mustn't be giging you mustn't be giging he mustn't be giging we mustn't be giging you mustn't be giging they mustn't be giging
Perfect	V-ing perfect
I mustn't have giged you mustn't have giged he mustn't have giged we mustn't have giged you mustn't have giged they mustn't have giged	I mustn't have been giging you mustn't have been giging he mustn't have been giging we mustn't have been giging you mustn't have been giging they mustn't have been giging

Interrogative form

Simple form	V-ing form
must I gig? must you gig? must he gig? must we gig? must you gig? must they gig?	must I be giging? must you be giging? must he be giging? must we be giging? must you be giging? must they be giging?
Perfect	V-ing perfect
must I have giged? must you have giged? must he have giged? must we have giged? must you have giged? must they have giged?	must I have been giging? must you have been giging? must he have been giging? must we have been giging? must you have been giging? must they have been giging?

Interro-negative form

Simple form	V-ing form
mustn't I gig? mustn't you gig? mustn't he gig? mustn't we gig? mustn't you gig? mustn't they gig?	mustn't I be giging? mustn't you be giging? mustn't he be giging? mustn't we be giging? mustn't you be giging? mustn't they be giging?
Perfect	V-ing perfect
mustn't I have giged? mustn't you have giged? mustn't he have giged? mustn't we have giged? mustn't you have giged? mustn't they have giged?	mustn't I have been giging? mustn't you have been giging? mustn't he have been giging? mustn't we have been giging? mustn't you have been giging? mustn't they have been giging?