English verb conjugation
MUST UNBURDEN

Regular verb: unburden - unburdened - unburdened

Affirmation

Simple form	V-ing form
I must unburden you must unburden he must unburden we must unburden you must unburden they must unburden	I must be unburdening you must be unburdening he must be unburdening we must be unburdening you must be unburdening they must be unburdening
Perfect	V-ing perfect
I must have unburdened you must have unburdened he must have unburdened we must have unburdened you must have unburdened they must have unburdened	I must have been unburdening you must have been unburdening he must have been unburdening we must have been unburdening you must have been unburdening they must have been unburdening

Negation

Simple form	V-ing form
I mustn't unburden you mustn't unburden he mustn't unburden we mustn't unburden you mustn't unburden they mustn't unburden	I mustn't be unburdening you mustn't be unburdening he mustn't be unburdening we mustn't be unburdening you mustn't be unburdening they mustn't be unburdening
Perfect	V-ing perfect
I mustn't have unburdened you mustn't have unburdened he mustn't have unburdened we mustn't have unburdened you mustn't have unburdened they mustn't have unburdened	I mustn't have been unburdening you mustn't have been unburdening he mustn't have been unburdening we mustn't have been unburdening you mustn't have been unburdening they mustn't have been unburdening

Interrogative form

Simple form	V-ing form
must I unburden? must you unburden? must he unburden? must we unburden? must you unburden? must they unburden?	must I be unburdening? must you be unburdening? must he be unburdening? must we be unburdening? must you be unburdening? must they be unburdening?
Perfect	V-ing perfect
must I have unburdened? must you have unburdened? must he have unburdened? must we have unburdened? must you have unburdened? must they have unburdened?	must I have been unburdening? must you have been unburdening? must he have been unburdening? must we have been unburdening? must you have been unburdening? must they have been unburdening?

Interro-negative form

Simple form	V-ing form
mustn't I unburden? mustn't you unburden? mustn't he unburden? mustn't we unburden? mustn't you unburden? mustn't they unburden?	mustn't I be unburdening? mustn't you be unburdening? mustn't he be unburdening? mustn't we be unburdening? mustn't you be unburdening? mustn't they be unburdening?
Perfect	V-ing perfect
mustn't I have unburdened? mustn't you have unburdened? mustn't he have unburdened? mustn't we have unburdened? mustn't you have unburdened? mustn't they have unburdened?	mustn't I have been unburdening? mustn't you have been unburdening? mustn't he have been unburdening? mustn't we have been unburdening? mustn't you have been unburdening? mustn't they have been unburdening?