English verb conjugation
MUST UM

Regular verb: um - umed - umed

Affirmation

Simple form	V-ing form
I must um you must um he must um we must um you must um they must um	I must be uming you must be uming he must be uming we must be uming you must be uming they must be uming
Perfect	V-ing perfect
I must have umed you must have umed he must have umed we must have umed you must have umed they must have umed	I must have been uming you must have been uming he must have been uming we must have been uming you must have been uming they must have been uming

Negation

Simple form	V-ing form
I mustn't um you mustn't um he mustn't um we mustn't um you mustn't um they mustn't um	I mustn't be uming you mustn't be uming he mustn't be uming we mustn't be uming you mustn't be uming they mustn't be uming
Perfect	V-ing perfect
I mustn't have umed you mustn't have umed he mustn't have umed we mustn't have umed you mustn't have umed they mustn't have umed	I mustn't have been uming you mustn't have been uming he mustn't have been uming we mustn't have been uming you mustn't have been uming they mustn't have been uming

Interrogative form

Simple form	V-ing form
must I um? must you um? must he um? must we um? must you um? must they um?	must I be uming? must you be uming? must he be uming? must we be uming? must you be uming? must they be uming?
Perfect	V-ing perfect
must I have umed? must you have umed? must he have umed? must we have umed? must you have umed? must they have umed?	must I have been uming? must you have been uming? must he have been uming? must we have been uming? must you have been uming? must they have been uming?

Interro-negative form

Simple form	V-ing form
mustn't I um? mustn't you um? mustn't he um? mustn't we um? mustn't you um? mustn't they um?	mustn't I be uming? mustn't you be uming? mustn't he be uming? mustn't we be uming? mustn't you be uming? mustn't they be uming?
Perfect	V-ing perfect
mustn't I have umed? mustn't you have umed? mustn't he have umed? mustn't we have umed? mustn't you have umed? mustn't they have umed?	mustn't I have been uming? mustn't you have been uming? mustn't he have been uming? mustn't we have been uming? mustn't you have been uming? mustn't they have been uming?