English verb conjugation
MUST UM

Regular verb: um - umed - umed

Affirmation

Simple form	V-ing form
I must um you must um she must um we must um you must um they must um	I must be uming you must be uming she 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 she 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 she 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 she 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 she 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 she 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 she 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 she um? must we um? must you um? must they um?	must I be uming? must you be uming? must she 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 she 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 she 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 she 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 she 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 she 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 she have been uming? mustn't we have been uming? mustn't you have been uming? mustn't they have been uming?