English verb conjugation MUST ROUGHEN

Regular verb: roughen - roughened - roughened

Affirmation

Simple form

I must roughen
you must roughen
he must roughen
we must roughen
you must roughen
they must roughen

V-ing form

I must be roughening
you must be roughening
he must be roughening
we must be roughening
you must be roughening
they must be roughening

Perfect

I must have roughened
you must have roughened
he must have roughened
we must have roughened
you must have roughened
they must have roughened

V-ing perfect

I must have been roughening
you must have been roughening
he must have been roughening
we must have been roughening
you must have been roughening
they must have been roughening

Negation

Simple form

I mustn't roughen
you mustn't roughen
he mustn't roughen
we mustn't roughen
you mustn't roughen
they mustn't roughen

V-ing form

I mustn't be roughening
you mustn't be roughening
he mustn't be roughening
we mustn't be roughening
you mustn't be roughening
they mustn't be roughening

Perfect

I mustn't have roughened
you mustn't have roughened
he mustn't have roughened
we mustn't have roughened
you mustn't have roughened
they mustn't have roughened

V-ing perfect

I mustn't have been roughening
you mustn't have been roughening
he mustn't have been roughening
we mustn't have been roughening
you mustn't have been roughening
they mustn't have been roughening

Interrogative form

Simple form

must I roughen?
must you roughen?
must he roughen?
must we roughen?
must you roughen?
must they roughen?

V-ing form

must I be roughening?
must you be roughening?
must he be roughening?
must we be roughening?
must you be roughening?
must they be roughening?

Perfect

must I have roughened?
must you have roughened?
must he have roughened?
must we have roughened?
must you have roughened?
must they have roughened?

V-ing perfect

must I have been roughening?
must you have been roughening?
must he have been roughening?
must we have been roughening?
must you have been roughening?
must they have been roughening?

Interro-negative form

Simple form

mustn't I roughen?
mustn't you roughen?
mustn't he roughen?
mustn't we roughen?
mustn't you roughen?
mustn't they roughen?

V-ing form

mustn't I be roughening?
mustn't you be roughening?
mustn't he be roughening?
mustn't we be roughening?
mustn't you be roughening?
mustn't they be roughening?

Perfect

mustn't I have roughened?
mustn't you have roughened?
mustn't he have roughened?
mustn't we have roughened?
mustn't you have roughened?
mustn't they have roughened?

V-ing perfect

mustn't I have been roughening?
mustn't you have been roughening?
mustn't he have been roughening?
mustn't we have been roughening?
mustn't you have been roughening?
mustn't they have been roughening?

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