English verb conjugation
MUST HAFT

Regular verb: haft - hafted - hafted

Affirmation

Simple form	V-ing form
I must haft you must haft he must haft we must haft you must haft they must haft	I must be hafting you must be hafting he must be hafting we must be hafting you must be hafting they must be hafting
Perfect	V-ing perfect
I must have hafted you must have hafted he must have hafted we must have hafted you must have hafted they must have hafted	I must have been hafting you must have been hafting he must have been hafting we must have been hafting you must have been hafting they must have been hafting

Negation

Simple form	V-ing form
I mustn't haft you mustn't haft he mustn't haft we mustn't haft you mustn't haft they mustn't haft	I mustn't be hafting you mustn't be hafting he mustn't be hafting we mustn't be hafting you mustn't be hafting they mustn't be hafting
Perfect	V-ing perfect
I mustn't have hafted you mustn't have hafted he mustn't have hafted we mustn't have hafted you mustn't have hafted they mustn't have hafted	I mustn't have been hafting you mustn't have been hafting he mustn't have been hafting we mustn't have been hafting you mustn't have been hafting they mustn't have been hafting

Interrogative form

Simple form	V-ing form
must I haft? must you haft? must he haft? must we haft? must you haft? must they haft?	must I be hafting? must you be hafting? must he be hafting? must we be hafting? must you be hafting? must they be hafting?
Perfect	V-ing perfect
must I have hafted? must you have hafted? must he have hafted? must we have hafted? must you have hafted? must they have hafted?	must I have been hafting? must you have been hafting? must he have been hafting? must we have been hafting? must you have been hafting? must they have been hafting?

Interro-negative form

Simple form	V-ing form
mustn't I haft? mustn't you haft? mustn't he haft? mustn't we haft? mustn't you haft? mustn't they haft?	mustn't I be hafting? mustn't you be hafting? mustn't he be hafting? mustn't we be hafting? mustn't you be hafting? mustn't they be hafting?
Perfect	V-ing perfect
mustn't I have hafted? mustn't you have hafted? mustn't he have hafted? mustn't we have hafted? mustn't you have hafted? mustn't they have hafted?	mustn't I have been hafting? mustn't you have been hafting? mustn't he have been hafting? mustn't we have been hafting? mustn't you have been hafting? mustn't they have been hafting?