English verb conjugation
MUST DOCTOR

Regular verb: doctor - doctored - doctored

Affirmation

Simple form	V-ing form
I must doctor you must doctor he must doctor we must doctor you must doctor they must doctor	I must be doctoring you must be doctoring he 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 he 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 he 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 must not doctor you must not doctor he must not doctor we must not doctor you must not doctor they must not doctor	I must not be doctoring you must not be doctoring he must not be doctoring we must not be doctoring you must not be doctoring they must not be doctoring
Perfect	V-ing perfect
I must not have doctored you must not have doctored he must not have doctored we must not have doctored you must not have doctored they must not have doctored	I must not have been doctoring you must not have been doctoring he must not have been doctoring we must not have been doctoring you must not have been doctoring they must not have been doctoring

Interrogative form

Simple form	V-ing form
must I doctor? must you doctor? must he doctor? must we doctor? must you doctor? must they doctor?	must I be doctoring? must you be doctoring? must he 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 he 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 he 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
must I not doctor? must you not doctor? must he not doctor? must we not doctor? must you not doctor? must they not doctor?	must I not be doctoring? must you not be doctoring? must he not be doctoring? must we not be doctoring? must you not be doctoring? must they not be doctoring?
Perfect	V-ing perfect
must I not have doctored? must you not have doctored? must he not have doctored? must we not have doctored? must you not have doctored? must they not have doctored?	must I not have been doctoring? must you not have been doctoring? must he not have been doctoring? must we not have been doctoring? must you not have been doctoring? must they not have been doctoring?