English verb conjugation
MUST VAPOR

Regular verb: vapor - vapored - vapored

Affirmation

Simple form	V-ing form
I must vapor you must vapor he must vapor we must vapor you must vapor they must vapor	I must be vaporing you must be vaporing he must be vaporing we must be vaporing you must be vaporing they must be vaporing
Perfect	V-ing perfect
I must have vapored you must have vapored he must have vapored we must have vapored you must have vapored they must have vapored	I must have been vaporing you must have been vaporing he must have been vaporing we must have been vaporing you must have been vaporing they must have been vaporing

Negation

Simple form	V-ing form
I mustn't vapor you mustn't vapor he mustn't vapor we mustn't vapor you mustn't vapor they mustn't vapor	I mustn't be vaporing you mustn't be vaporing he mustn't be vaporing we mustn't be vaporing you mustn't be vaporing they mustn't be vaporing
Perfect	V-ing perfect
I mustn't have vapored you mustn't have vapored he mustn't have vapored we mustn't have vapored you mustn't have vapored they mustn't have vapored	I mustn't have been vaporing you mustn't have been vaporing he mustn't have been vaporing we mustn't have been vaporing you mustn't have been vaporing they mustn't have been vaporing

Interrogative form

Simple form	V-ing form
must I vapor? must you vapor? must he vapor? must we vapor? must you vapor? must they vapor?	must I be vaporing? must you be vaporing? must he be vaporing? must we be vaporing? must you be vaporing? must they be vaporing?
Perfect	V-ing perfect
must I have vapored? must you have vapored? must he have vapored? must we have vapored? must you have vapored? must they have vapored?	must I have been vaporing? must you have been vaporing? must he have been vaporing? must we have been vaporing? must you have been vaporing? must they have been vaporing?

Interro-negative form

Simple form	V-ing form
mustn't I vapor? mustn't you vapor? mustn't he vapor? mustn't we vapor? mustn't you vapor? mustn't they vapor?	mustn't I be vaporing? mustn't you be vaporing? mustn't he be vaporing? mustn't we be vaporing? mustn't you be vaporing? mustn't they be vaporing?
Perfect	V-ing perfect
mustn't I have vapored? mustn't you have vapored? mustn't he have vapored? mustn't we have vapored? mustn't you have vapored? mustn't they have vapored?	mustn't I have been vaporing? mustn't you have been vaporing? mustn't he have been vaporing? mustn't we have been vaporing? mustn't you have been vaporing? mustn't they have been vaporing?