English verb conjugation
MUST DOCTOR

Regular verb: doctor - doctored - doctored

Affirmation

Simple form	V-ing form
I must doctor you must doctor she must doctor we must doctor you must doctor they must doctor	I must be doctoring you must be doctoring she must be doctoring we must be doctoring you must be doctoring they must be doctoring
Perfect	V-ing perfect
I must have doctored you must have doctored she must have doctored we must have doctored you must have doctored they must have doctored	I must have been doctoring you must have been doctoring she must have been doctoring we must have been doctoring you must have been doctoring they must have been doctoring

Negation

Simple form	V-ing form
I mustn't doctor you mustn't doctor she mustn't doctor we mustn't doctor you mustn't doctor they mustn't doctor	I mustn't be doctoring you mustn't be doctoring she mustn't be doctoring we mustn't be doctoring you mustn't be doctoring they mustn't be doctoring
Perfect	V-ing perfect
I mustn't have doctored you mustn't have doctored she mustn't have doctored we mustn't have doctored you mustn't have doctored they mustn't have doctored	I mustn't have been doctoring you mustn't have been doctoring she mustn't have been doctoring we mustn't have been doctoring you mustn't have been doctoring they mustn't have been doctoring

Interrogative form

Simple form	V-ing form
must I doctor? must you doctor? must she doctor? must we doctor? must you doctor? must they doctor?	must I be doctoring? must you be doctoring? must she be doctoring? must we be doctoring? must you be doctoring? must they be doctoring?
Perfect	V-ing perfect
must I have doctored? must you have doctored? must she have doctored? must we have doctored? must you have doctored? must they have doctored?	must I have been doctoring? must you have been doctoring? must she have been doctoring? must we have been doctoring? must you have been doctoring? must they have been doctoring?

Interro-negative form

Simple form	V-ing form
mustn't I doctor? mustn't you doctor? mustn't she doctor? mustn't we doctor? mustn't you doctor? mustn't they doctor?	mustn't I be doctoring? mustn't you be doctoring? mustn't she be doctoring? mustn't we be doctoring? mustn't you be doctoring? mustn't they be doctoring?
Perfect	V-ing perfect
mustn't I have doctored? mustn't you have doctored? mustn't she have doctored? mustn't we have doctored? mustn't you have doctored? mustn't they have doctored?	mustn't I have been doctoring? mustn't you have been doctoring? mustn't she have been doctoring? mustn't we have been doctoring? mustn't you have been doctoring? mustn't they have been doctoring?