English verb conjugation
MUST ROUGH

Regular verb: rough - roughed - roughed

Affirmation

Simple form	V-ing form
I must rough you must rough she must rough we must rough you must rough they must rough	I must be roughing you must be roughing she 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 she 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 she 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 mustn't rough you mustn't rough she mustn't rough we mustn't rough you mustn't rough they mustn't rough	I mustn't be roughing you mustn't be roughing she mustn't be roughing we mustn't be roughing you mustn't be roughing they mustn't be roughing
Perfect	V-ing perfect
I mustn't have roughed you mustn't have roughed she mustn't have roughed we mustn't have roughed you mustn't have roughed they mustn't have roughed	I mustn't have been roughing you mustn't have been roughing she mustn't have been roughing we mustn't have been roughing you mustn't have been roughing they mustn't have been roughing

Interrogative form

Simple form	V-ing form
must I rough? must you rough? must she rough? must we rough? must you rough? must they rough?	must I be roughing? must you be roughing? must she 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 she 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 she 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
mustn't I rough? mustn't you rough? mustn't she rough? mustn't we rough? mustn't you rough? mustn't they rough?	mustn't I be roughing? mustn't you be roughing? mustn't she be roughing? mustn't we be roughing? mustn't you be roughing? mustn't they be roughing?
Perfect	V-ing perfect
mustn't I have roughed? mustn't you have roughed? mustn't she have roughed? mustn't we have roughed? mustn't you have roughed? mustn't they have roughed?	mustn't I have been roughing? mustn't you have been roughing? mustn't she have been roughing? mustn't we have been roughing? mustn't you have been roughing? mustn't they have been roughing?