English verb conjugation
MUST VAMP

Regular verb: vamp - vamped - vamped

Affirmation

Simple form	V-ing form
I must vamp you must vamp he must vamp we must vamp you must vamp they must vamp	I must be vamping you must be vamping he must be vamping we must be vamping you must be vamping they must be vamping
Perfect	V-ing perfect
I must have vamped you must have vamped he must have vamped we must have vamped you must have vamped they must have vamped	I must have been vamping you must have been vamping he must have been vamping we must have been vamping you must have been vamping they must have been vamping

Negation

Simple form	V-ing form
I mustn't vamp you mustn't vamp he mustn't vamp we mustn't vamp you mustn't vamp they mustn't vamp	I mustn't be vamping you mustn't be vamping he mustn't be vamping we mustn't be vamping you mustn't be vamping they mustn't be vamping
Perfect	V-ing perfect
I mustn't have vamped you mustn't have vamped he mustn't have vamped we mustn't have vamped you mustn't have vamped they mustn't have vamped	I mustn't have been vamping you mustn't have been vamping he mustn't have been vamping we mustn't have been vamping you mustn't have been vamping they mustn't have been vamping

Interrogative form

Simple form	V-ing form
must I vamp? must you vamp? must he vamp? must we vamp? must you vamp? must they vamp?	must I be vamping? must you be vamping? must he be vamping? must we be vamping? must you be vamping? must they be vamping?
Perfect	V-ing perfect
must I have vamped? must you have vamped? must he have vamped? must we have vamped? must you have vamped? must they have vamped?	must I have been vamping? must you have been vamping? must he have been vamping? must we have been vamping? must you have been vamping? must they have been vamping?

Interro-negative form

Simple form	V-ing form
mustn't I vamp? mustn't you vamp? mustn't he vamp? mustn't we vamp? mustn't you vamp? mustn't they vamp?	mustn't I be vamping? mustn't you be vamping? mustn't he be vamping? mustn't we be vamping? mustn't you be vamping? mustn't they be vamping?
Perfect	V-ing perfect
mustn't I have vamped? mustn't you have vamped? mustn't he have vamped? mustn't we have vamped? mustn't you have vamped? mustn't they have vamped?	mustn't I have been vamping? mustn't you have been vamping? mustn't he have been vamping? mustn't we have been vamping? mustn't you have been vamping? mustn't they have been vamping?