English verb conjugation
MUST FRONT

Regular verb: front - fronted - fronted

Affirmation

Simple form	V-ing form
I must front you must front he must front we must front you must front they must front	I must be fronting you must be fronting he must be fronting we must be fronting you must be fronting they must be fronting
Perfect	V-ing perfect
I must have fronted you must have fronted he must have fronted we must have fronted you must have fronted they must have fronted	I must have been fronting you must have been fronting he must have been fronting we must have been fronting you must have been fronting they must have been fronting

Negation

Simple form	V-ing form
I mustn't front you mustn't front he mustn't front we mustn't front you mustn't front they mustn't front	I mustn't be fronting you mustn't be fronting he mustn't be fronting we mustn't be fronting you mustn't be fronting they mustn't be fronting
Perfect	V-ing perfect
I mustn't have fronted you mustn't have fronted he mustn't have fronted we mustn't have fronted you mustn't have fronted they mustn't have fronted	I mustn't have been fronting you mustn't have been fronting he mustn't have been fronting we mustn't have been fronting you mustn't have been fronting they mustn't have been fronting

Interrogative form

Simple form	V-ing form
must I front? must you front? must he front? must we front? must you front? must they front?	must I be fronting? must you be fronting? must he be fronting? must we be fronting? must you be fronting? must they be fronting?
Perfect	V-ing perfect
must I have fronted? must you have fronted? must he have fronted? must we have fronted? must you have fronted? must they have fronted?	must I have been fronting? must you have been fronting? must he have been fronting? must we have been fronting? must you have been fronting? must they have been fronting?

Interro-negative form

Simple form	V-ing form
mustn't I front? mustn't you front? mustn't he front? mustn't we front? mustn't you front? mustn't they front?	mustn't I be fronting? mustn't you be fronting? mustn't he be fronting? mustn't we be fronting? mustn't you be fronting? mustn't they be fronting?
Perfect	V-ing perfect
mustn't I have fronted? mustn't you have fronted? mustn't he have fronted? mustn't we have fronted? mustn't you have fronted? mustn't they have fronted?	mustn't I have been fronting? mustn't you have been fronting? mustn't he have been fronting? mustn't we have been fronting? mustn't you have been fronting? mustn't they have been fronting?