English verb conjugation
MUST VOW

Regular verb: vow - vowed - vowed

Affirmation

Simple form	V-ing form
I must vow you must vow he must vow we must vow you must vow they must vow	I must be vowing you must be vowing he must be vowing we must be vowing you must be vowing they must be vowing
Perfect	V-ing perfect
I must have vowed you must have vowed he must have vowed we must have vowed you must have vowed they must have vowed	I must have been vowing you must have been vowing he must have been vowing we must have been vowing you must have been vowing they must have been vowing

Negation

Simple form	V-ing form
I mustn't vow you mustn't vow he mustn't vow we mustn't vow you mustn't vow they mustn't vow	I mustn't be vowing you mustn't be vowing he mustn't be vowing we mustn't be vowing you mustn't be vowing they mustn't be vowing
Perfect	V-ing perfect
I mustn't have vowed you mustn't have vowed he mustn't have vowed we mustn't have vowed you mustn't have vowed they mustn't have vowed	I mustn't have been vowing you mustn't have been vowing he mustn't have been vowing we mustn't have been vowing you mustn't have been vowing they mustn't have been vowing

Interrogative form

Simple form	V-ing form
must I vow? must you vow? must he vow? must we vow? must you vow? must they vow?	must I be vowing? must you be vowing? must he be vowing? must we be vowing? must you be vowing? must they be vowing?
Perfect	V-ing perfect
must I have vowed? must you have vowed? must he have vowed? must we have vowed? must you have vowed? must they have vowed?	must I have been vowing? must you have been vowing? must he have been vowing? must we have been vowing? must you have been vowing? must they have been vowing?

Interro-negative form

Simple form	V-ing form
mustn't I vow? mustn't you vow? mustn't he vow? mustn't we vow? mustn't you vow? mustn't they vow?	mustn't I be vowing? mustn't you be vowing? mustn't he be vowing? mustn't we be vowing? mustn't you be vowing? mustn't they be vowing?
Perfect	V-ing perfect
mustn't I have vowed? mustn't you have vowed? mustn't he have vowed? mustn't we have vowed? mustn't you have vowed? mustn't they have vowed?	mustn't I have been vowing? mustn't you have been vowing? mustn't he have been vowing? mustn't we have been vowing? mustn't you have been vowing? mustn't they have been vowing?