English verb conjugation COULD DEEPEN

Regular verb: deepen - deepened - deepened

Affirmation

Simple form

I could deepen
you could deepen
he could deepen
we could deepen
you could deepen
they could deepen

V-ing form

I could be deepening
you could be deepening
he could be deepening
we could be deepening
you could be deepening
they could be deepening

Perfect

I could have deepened
you could have deepened
he could have deepened
we could have deepened
you could have deepened
they could have deepened

V-ing perfect

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

Negation

Simple form

I could not deepen
you could not deepen
he could not deepen
we could not deepen
you could not deepen
they could not deepen

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I deepen?
could you deepen?
could he deepen?
could we deepen?
could you deepen?
could they deepen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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