English verb conjugation
MUST VAT

Regular verb: vat - vatted - vatted

Affirmation

Simple form	V-ing form
I must vat you must vat he must vat we must vat you must vat they must vat	I must be vatting you must be vatting he must be vatting we must be vatting you must be vatting they must be vatting
Perfect	V-ing perfect
I must have vatted you must have vatted he must have vatted we must have vatted you must have vatted they must have vatted	I must have been vatting you must have been vatting he must have been vatting we must have been vatting you must have been vatting they must have been vatting

Negation

Simple form	V-ing form
I mustn't vat you mustn't vat he mustn't vat we mustn't vat you mustn't vat they mustn't vat	I mustn't be vatting you mustn't be vatting he mustn't be vatting we mustn't be vatting you mustn't be vatting they mustn't be vatting
Perfect	V-ing perfect
I mustn't have vatted you mustn't have vatted he mustn't have vatted we mustn't have vatted you mustn't have vatted they mustn't have vatted	I mustn't have been vatting you mustn't have been vatting he mustn't have been vatting we mustn't have been vatting you mustn't have been vatting they mustn't have been vatting

Interrogative form

Simple form	V-ing form
must I vat? must you vat? must he vat? must we vat? must you vat? must they vat?	must I be vatting? must you be vatting? must he be vatting? must we be vatting? must you be vatting? must they be vatting?
Perfect	V-ing perfect
must I have vatted? must you have vatted? must he have vatted? must we have vatted? must you have vatted? must they have vatted?	must I have been vatting? must you have been vatting? must he have been vatting? must we have been vatting? must you have been vatting? must they have been vatting?

Interro-negative form

Simple form	V-ing form
mustn't I vat? mustn't you vat? mustn't he vat? mustn't we vat? mustn't you vat? mustn't they vat?	mustn't I be vatting? mustn't you be vatting? mustn't he be vatting? mustn't we be vatting? mustn't you be vatting? mustn't they be vatting?
Perfect	V-ing perfect
mustn't I have vatted? mustn't you have vatted? mustn't he have vatted? mustn't we have vatted? mustn't you have vatted? mustn't they have vatted?	mustn't I have been vatting? mustn't you have been vatting? mustn't he have been vatting? mustn't we have been vatting? mustn't you have been vatting? mustn't they have been vatting?