English verb conjugation
MUST FROCK

Regular verb: frock - frocked - frocked

Affirmation

Simple form	V-ing form
I must frock you must frock he must frock we must frock you must frock they must frock	I must be frocking you must be frocking he must be frocking we must be frocking you must be frocking they must be frocking
Perfect	V-ing perfect
I must have frocked you must have frocked he must have frocked we must have frocked you must have frocked they must have frocked	I must have been frocking you must have been frocking he must have been frocking we must have been frocking you must have been frocking they must have been frocking

Negation

Simple form	V-ing form
I mustn't frock you mustn't frock he mustn't frock we mustn't frock you mustn't frock they mustn't frock	I mustn't be frocking you mustn't be frocking he mustn't be frocking we mustn't be frocking you mustn't be frocking they mustn't be frocking
Perfect	V-ing perfect
I mustn't have frocked you mustn't have frocked he mustn't have frocked we mustn't have frocked you mustn't have frocked they mustn't have frocked	I mustn't have been frocking you mustn't have been frocking he mustn't have been frocking we mustn't have been frocking you mustn't have been frocking they mustn't have been frocking

Interrogative form

Simple form	V-ing form
must I frock? must you frock? must he frock? must we frock? must you frock? must they frock?	must I be frocking? must you be frocking? must he be frocking? must we be frocking? must you be frocking? must they be frocking?
Perfect	V-ing perfect
must I have frocked? must you have frocked? must he have frocked? must we have frocked? must you have frocked? must they have frocked?	must I have been frocking? must you have been frocking? must he have been frocking? must we have been frocking? must you have been frocking? must they have been frocking?

Interro-negative form

Simple form	V-ing form
mustn't I frock? mustn't you frock? mustn't he frock? mustn't we frock? mustn't you frock? mustn't they frock?	mustn't I be frocking? mustn't you be frocking? mustn't he be frocking? mustn't we be frocking? mustn't you be frocking? mustn't they be frocking?
Perfect	V-ing perfect
mustn't I have frocked? mustn't you have frocked? mustn't he have frocked? mustn't we have frocked? mustn't you have frocked? mustn't they have frocked?	mustn't I have been frocking? mustn't you have been frocking? mustn't he have been frocking? mustn't we have been frocking? mustn't you have been frocking? mustn't they have been frocking?