English verb conjugation
MUST TAT

Regular verb: tat - tatted - tatted

Affirmation

Simple form	V-ing form
I must tat you must tat he must tat we must tat you must tat they must tat	I must be tatting you must be tatting he must be tatting we must be tatting you must be tatting they must be tatting
Perfect	V-ing perfect
I must have tatted you must have tatted he must have tatted we must have tatted you must have tatted they must have tatted	I must have been tatting you must have been tatting he must have been tatting we must have been tatting you must have been tatting they must have been tatting

Negation

Simple form	V-ing form
I mustn't tat you mustn't tat he mustn't tat we mustn't tat you mustn't tat they mustn't tat	I mustn't be tatting you mustn't be tatting he mustn't be tatting we mustn't be tatting you mustn't be tatting they mustn't be tatting
Perfect	V-ing perfect
I mustn't have tatted you mustn't have tatted he mustn't have tatted we mustn't have tatted you mustn't have tatted they mustn't have tatted	I mustn't have been tatting you mustn't have been tatting he mustn't have been tatting we mustn't have been tatting you mustn't have been tatting they mustn't have been tatting

Interrogative form

Simple form	V-ing form
must I tat? must you tat? must he tat? must we tat? must you tat? must they tat?	must I be tatting? must you be tatting? must he be tatting? must we be tatting? must you be tatting? must they be tatting?
Perfect	V-ing perfect
must I have tatted? must you have tatted? must he have tatted? must we have tatted? must you have tatted? must they have tatted?	must I have been tatting? must you have been tatting? must he have been tatting? must we have been tatting? must you have been tatting? must they have been tatting?

Interro-negative form

Simple form	V-ing form
mustn't I tat? mustn't you tat? mustn't he tat? mustn't we tat? mustn't you tat? mustn't they tat?	mustn't I be tatting? mustn't you be tatting? mustn't he be tatting? mustn't we be tatting? mustn't you be tatting? mustn't they be tatting?
Perfect	V-ing perfect
mustn't I have tatted? mustn't you have tatted? mustn't he have tatted? mustn't we have tatted? mustn't you have tatted? mustn't they have tatted?	mustn't I have been tatting? mustn't you have been tatting? mustn't he have been tatting? mustn't we have been tatting? mustn't you have been tatting? mustn't they have been tatting?