English verb conjugation COULD OBSESS

Regular verb: obsess - obsessed - obsessed

Affirmation

Simple form

I could obsess
you could obsess
he could obsess
we could obsess
you could obsess
they could obsess

V-ing form

I could be obsessing
you could be obsessing
he could be obsessing
we could be obsessing
you could be obsessing
they could be obsessing

Perfect

I could have obsessed
you could have obsessed
he could have obsessed
we could have obsessed
you could have obsessed
they could have obsessed

V-ing perfect

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

Negation

Simple form

I could not obsess
you could not obsess
he could not obsess
we could not obsess
you could not obsess
they could not obsess

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I obsess?
could you obsess?
could he obsess?
could we obsess?
could you obsess?
could they obsess?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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