English verb conjugation
MUST ROUGH

Regular verb: rough - roughed - roughed

Affirmation

Simple form	V-ing form
I must rough you must rough he must rough we must rough you must rough they must rough	I must be roughing you must be roughing he must be roughing we must be roughing you must be roughing they must be roughing
Perfect	V-ing perfect
I must have roughed you must have roughed he must have roughed we must have roughed you must have roughed they must have roughed	I must have been roughing you must have been roughing he must have been roughing we must have been roughing you must have been roughing they must have been roughing

Negation

Simple form	V-ing form
I must not rough you must not rough he must not rough we must not rough you must not rough they must not rough	I must not be roughing you must not be roughing he must not be roughing we must not be roughing you must not be roughing they must not be roughing
Perfect	V-ing perfect
I must not have roughed you must not have roughed he must not have roughed we must not have roughed you must not have roughed they must not have roughed	I must not have been roughing you must not have been roughing he must not have been roughing we must not have been roughing you must not have been roughing they must not have been roughing

Interrogative form

Simple form	V-ing form
must I rough? must you rough? must he rough? must we rough? must you rough? must they rough?	must I be roughing? must you be roughing? must he be roughing? must we be roughing? must you be roughing? must they be roughing?
Perfect	V-ing perfect
must I have roughed? must you have roughed? must he have roughed? must we have roughed? must you have roughed? must they have roughed?	must I have been roughing? must you have been roughing? must he have been roughing? must we have been roughing? must you have been roughing? must they have been roughing?

Interro-negative form

Simple form	V-ing form
must I not rough? must you not rough? must he not rough? must we not rough? must you not rough? must they not rough?	must I not be roughing? must you not be roughing? must he not be roughing? must we not be roughing? must you not be roughing? must they not be roughing?
Perfect	V-ing perfect
must I not have roughed? must you not have roughed? must he not have roughed? must we not have roughed? must you not have roughed? must they not have roughed?	must I not have been roughing? must you not have been roughing? must he not have been roughing? must we not have been roughing? must you not have been roughing? must they not have been roughing?