English verb conjugation COULD STEEPEN

Regular verb: steepen - steepened - steepened

Affirmation

Simple form

I could steepen
you could steepen
he could steepen
we could steepen
you could steepen
they could steepen

V-ing form

I could be steepening
you could be steepening
he could be steepening
we could be steepening
you could be steepening
they could be steepening

Perfect

I could have steepened
you could have steepened
he could have steepened
we could have steepened
you could have steepened
they could have steepened

V-ing perfect

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

Negation

Simple form

I could not steepen
you could not steepen
he could not steepen
we could not steepen
you could not steepen
they could not steepen

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I steepen?
could you steepen?
could he steepen?
could we steepen?
could you steepen?
could they steepen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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