English verb conjugation COULD PURIFY

Regular verb: purify - purified - purified

Affirmation

Simple form

I could purify
you could purify
he could purify
we could purify
you could purify
they could purify

V-ing form

I could be purifying
you could be purifying
he could be purifying
we could be purifying
you could be purifying
they could be purifying

Perfect

I could have purified
you could have purified
he could have purified
we could have purified
you could have purified
they could have purified

V-ing perfect

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

Negation

Simple form

I could not purify
you could not purify
he could not purify
we could not purify
you could not purify
they could not purify

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I purify?
could you purify?
could he purify?
could we purify?
could you purify?
could they purify?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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