English verb conjugation COULD PI

Regular verb: pi - pied - pied

Affirmation

Simple form

I could pi
you could pi
he could pi
we could pi
you could pi
they could pi

V-ing form

I could be piing
you could be piing
he could be piing
we could be piing
you could be piing
they could be piing

Perfect

I could have pied
you could have pied
he could have pied
we could have pied
you could have pied
they could have pied

V-ing perfect

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

Negation

Simple form

I could not pi
you could not pi
he could not pi
we could not pi
you could not pi
they could not pi

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I pi?
could you pi?
could he pi?
could we pi?
could you pi?
could they pi?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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