English verb conjugation
MUST CARE

Regular verb: care - cared - cared

Affirmation

Simple form	V-ing form
I must care you must care he must care we must care you must care they must care	I must be caring you must be caring he must be caring we must be caring you must be caring they must be caring
Perfect	V-ing perfect
I must have cared you must have cared he must have cared we must have cared you must have cared they must have cared	I must have been caring you must have been caring he must have been caring we must have been caring you must have been caring they must have been caring

Negation

Simple form	V-ing form
I mustn't care you mustn't care he mustn't care we mustn't care you mustn't care they mustn't care	I mustn't be caring you mustn't be caring he mustn't be caring we mustn't be caring you mustn't be caring they mustn't be caring
Perfect	V-ing perfect
I mustn't have cared you mustn't have cared he mustn't have cared we mustn't have cared you mustn't have cared they mustn't have cared	I mustn't have been caring you mustn't have been caring he mustn't have been caring we mustn't have been caring you mustn't have been caring they mustn't have been caring

Interrogative form

Simple form	V-ing form
must I care? must you care? must he care? must we care? must you care? must they care?	must I be caring? must you be caring? must he be caring? must we be caring? must you be caring? must they be caring?
Perfect	V-ing perfect
must I have cared? must you have cared? must he have cared? must we have cared? must you have cared? must they have cared?	must I have been caring? must you have been caring? must he have been caring? must we have been caring? must you have been caring? must they have been caring?

Interro-negative form

Simple form	V-ing form
mustn't I care? mustn't you care? mustn't he care? mustn't we care? mustn't you care? mustn't they care?	mustn't I be caring? mustn't you be caring? mustn't he be caring? mustn't we be caring? mustn't you be caring? mustn't they be caring?
Perfect	V-ing perfect
mustn't I have cared? mustn't you have cared? mustn't he have cared? mustn't we have cared? mustn't you have cared? mustn't they have cared?	mustn't I have been caring? mustn't you have been caring? mustn't he have been caring? mustn't we have been caring? mustn't you have been caring? mustn't they have been caring?