English verb conjugation COULD ROUGHEN

Regular verb: roughen - roughened - roughened

Affirmation

Simple form

I could roughen
you could roughen
he could roughen
we could roughen
you could roughen
they could roughen

V-ing form

I could be roughening
you could be roughening
he could be roughening
we could be roughening
you could be roughening
they could be roughening

Perfect

I could have roughened
you could have roughened
he could have roughened
we could have roughened
you could have roughened
they could have roughened

V-ing perfect

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

Negation

Simple form

I could not roughen
you could not roughen
he could not roughen
we could not roughen
you could not roughen
they could not roughen

V-ing form

I could not be roughening
you could not be roughening
he could not be roughening
we could not be roughening
you could not be roughening
they could not be roughening

Perfect

I could not have roughened
you could not have roughened
he could not have roughened
we could not have roughened
you could not have roughened
they could not have roughened

V-ing perfect

I could not have been roughening
you could not have been roughening
he could not have been roughening
we could not have been roughening
you could not have been roughening
they could not have been roughening

Interrogative form

Simple form

could I roughen?
could you roughen?
could he roughen?
could we roughen?
could you roughen?
could they roughen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not roughen?
could you not roughen?
could he not roughen?
could we not roughen?
could you not roughen?
could they not roughen?

V-ing form

could I not be roughening?
could you not be roughening?
could he not be roughening?
could we not be roughening?
could you not be roughening?
could they not be roughening?

Perfect

could I not have roughened?
could you not have roughened?
could he not have roughened?
could we not have roughened?
could you not have roughened?
could they not have roughened?

V-ing perfect

could I not have been roughening?
could you not have been roughening?
could he not have been roughening?
could we not have been roughening?
could you not have been roughening?
could they not have been roughening?

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