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 must not frock you must not frock he must not frock we must not frock you must not frock they must not frock	I must not be frocking you must not be frocking he must not be frocking we must not be frocking you must not be frocking they must not be frocking
Perfect	V-ing perfect
I must not have frocked you must not have frocked he must not have frocked we must not have frocked you must not have frocked they must not have frocked	I must not have been frocking you must not have been frocking he must not have been frocking we must not have been frocking you must not have been frocking they must not 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
must I not frock? must you not frock? must he not frock? must we not frock? must you not frock? must they not frock?	must I not be frocking? must you not be frocking? must he not be frocking? must we not be frocking? must you not be frocking? must they not be frocking?
Perfect	V-ing perfect
must I not have frocked? must you not have frocked? must he not have frocked? must we not have frocked? must you not have frocked? must they not have frocked?	must I not have been frocking? must you not have been frocking? must he not have been frocking? must we not have been frocking? must you not have been frocking? must they not have been frocking?