English verb conjugation
MUST PRESCRIBE

Regular verb: prescribe - prescribed - prescribed

Affirmation

Simple form	V-ing form
I must prescribe you must prescribe she must prescribe we must prescribe you must prescribe they must prescribe	I must be prescribing you must be prescribing she must be prescribing we must be prescribing you must be prescribing they must be prescribing
Perfect	V-ing perfect
I must have prescribed you must have prescribed she must have prescribed we must have prescribed you must have prescribed they must have prescribed	I must have been prescribing you must have been prescribing she must have been prescribing we must have been prescribing you must have been prescribing they must have been prescribing

Negation

Simple form	V-ing form
I mustn't prescribe you mustn't prescribe she mustn't prescribe we mustn't prescribe you mustn't prescribe they mustn't prescribe	I mustn't be prescribing you mustn't be prescribing she mustn't be prescribing we mustn't be prescribing you mustn't be prescribing they mustn't be prescribing
Perfect	V-ing perfect
I mustn't have prescribed you mustn't have prescribed she mustn't have prescribed we mustn't have prescribed you mustn't have prescribed they mustn't have prescribed	I mustn't have been prescribing you mustn't have been prescribing she mustn't have been prescribing we mustn't have been prescribing you mustn't have been prescribing they mustn't have been prescribing

Interrogative form

Simple form	V-ing form
must I prescribe? must you prescribe? must she prescribe? must we prescribe? must you prescribe? must they prescribe?	must I be prescribing? must you be prescribing? must she be prescribing? must we be prescribing? must you be prescribing? must they be prescribing?
Perfect	V-ing perfect
must I have prescribed? must you have prescribed? must she have prescribed? must we have prescribed? must you have prescribed? must they have prescribed?	must I have been prescribing? must you have been prescribing? must she have been prescribing? must we have been prescribing? must you have been prescribing? must they have been prescribing?

Interro-negative form

Simple form	V-ing form
mustn't I prescribe? mustn't you prescribe? mustn't she prescribe? mustn't we prescribe? mustn't you prescribe? mustn't they prescribe?	mustn't I be prescribing? mustn't you be prescribing? mustn't she be prescribing? mustn't we be prescribing? mustn't you be prescribing? mustn't they be prescribing?
Perfect	V-ing perfect
mustn't I have prescribed? mustn't you have prescribed? mustn't she have prescribed? mustn't we have prescribed? mustn't you have prescribed? mustn't they have prescribed?	mustn't I have been prescribing? mustn't you have been prescribing? mustn't she have been prescribing? mustn't we have been prescribing? mustn't you have been prescribing? mustn't they have been prescribing?