English verb conjugation
MUST UNTRUSS

Regular verb: untruss - untrussed - untrussed

Affirmation

Simple form	V-ing form
I must untruss you must untruss he must untruss we must untruss you must untruss they must untruss	I must be untrussing you must be untrussing he must be untrussing we must be untrussing you must be untrussing they must be untrussing
Perfect	V-ing perfect
I must have untrussed you must have untrussed he must have untrussed we must have untrussed you must have untrussed they must have untrussed	I must have been untrussing you must have been untrussing he must have been untrussing we must have been untrussing you must have been untrussing they must have been untrussing

Negation

Simple form	V-ing form
I mustn't untruss you mustn't untruss he mustn't untruss we mustn't untruss you mustn't untruss they mustn't untruss	I mustn't be untrussing you mustn't be untrussing he mustn't be untrussing we mustn't be untrussing you mustn't be untrussing they mustn't be untrussing
Perfect	V-ing perfect
I mustn't have untrussed you mustn't have untrussed he mustn't have untrussed we mustn't have untrussed you mustn't have untrussed they mustn't have untrussed	I mustn't have been untrussing you mustn't have been untrussing he mustn't have been untrussing we mustn't have been untrussing you mustn't have been untrussing they mustn't have been untrussing

Interrogative form

Simple form	V-ing form
must I untruss? must you untruss? must he untruss? must we untruss? must you untruss? must they untruss?	must I be untrussing? must you be untrussing? must he be untrussing? must we be untrussing? must you be untrussing? must they be untrussing?
Perfect	V-ing perfect
must I have untrussed? must you have untrussed? must he have untrussed? must we have untrussed? must you have untrussed? must they have untrussed?	must I have been untrussing? must you have been untrussing? must he have been untrussing? must we have been untrussing? must you have been untrussing? must they have been untrussing?

Interro-negative form

Simple form	V-ing form
mustn't I untruss? mustn't you untruss? mustn't he untruss? mustn't we untruss? mustn't you untruss? mustn't they untruss?	mustn't I be untrussing? mustn't you be untrussing? mustn't he be untrussing? mustn't we be untrussing? mustn't you be untrussing? mustn't they be untrussing?
Perfect	V-ing perfect
mustn't I have untrussed? mustn't you have untrussed? mustn't he have untrussed? mustn't we have untrussed? mustn't you have untrussed? mustn't they have untrussed?	mustn't I have been untrussing? mustn't you have been untrussing? mustn't he have been untrussing? mustn't we have been untrussing? mustn't you have been untrussing? mustn't they have been untrussing?