English verb conjugation
MUST TREAT

Regular verb: treat - treated - treated

Affirmation

Simple form	V-ing form
I must treat you must treat she must treat we must treat you must treat they must treat	I must be treating you must be treating she must be treating we must be treating you must be treating they must be treating
Perfect	V-ing perfect
I must have treated you must have treated she must have treated we must have treated you must have treated they must have treated	I must have been treating you must have been treating she must have been treating we must have been treating you must have been treating they must have been treating

Negation

Simple form	V-ing form
I mustn't treat you mustn't treat she mustn't treat we mustn't treat you mustn't treat they mustn't treat	I mustn't be treating you mustn't be treating she mustn't be treating we mustn't be treating you mustn't be treating they mustn't be treating
Perfect	V-ing perfect
I mustn't have treated you mustn't have treated she mustn't have treated we mustn't have treated you mustn't have treated they mustn't have treated	I mustn't have been treating you mustn't have been treating she mustn't have been treating we mustn't have been treating you mustn't have been treating they mustn't have been treating

Interrogative form

Simple form	V-ing form
must I treat? must you treat? must she treat? must we treat? must you treat? must they treat?	must I be treating? must you be treating? must she be treating? must we be treating? must you be treating? must they be treating?
Perfect	V-ing perfect
must I have treated? must you have treated? must she have treated? must we have treated? must you have treated? must they have treated?	must I have been treating? must you have been treating? must she have been treating? must we have been treating? must you have been treating? must they have been treating?

Interro-negative form

Simple form	V-ing form
mustn't I treat? mustn't you treat? mustn't she treat? mustn't we treat? mustn't you treat? mustn't they treat?	mustn't I be treating? mustn't you be treating? mustn't she be treating? mustn't we be treating? mustn't you be treating? mustn't they be treating?
Perfect	V-ing perfect
mustn't I have treated? mustn't you have treated? mustn't she have treated? mustn't we have treated? mustn't you have treated? mustn't they have treated?	mustn't I have been treating? mustn't you have been treating? mustn't she have been treating? mustn't we have been treating? mustn't you have been treating? mustn't they have been treating?