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 couldn't pi
you couldn't pi
he couldn't pi
we couldn't pi
you couldn't pi
they couldn't pi

V-ing form

I couldn't be piing
you couldn't be piing
he couldn't be piing
we couldn't be piing
you couldn't be piing
they couldn't be piing

Perfect

I couldn't have pied
you couldn't have pied
he couldn't have pied
we couldn't have pied
you couldn't have pied
they couldn't have pied

V-ing perfect

I couldn't have been piing
you couldn't have been piing
he couldn't have been piing
we couldn't have been piing
you couldn't have been piing
they couldn't 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

couldn't I pi?
couldn't you pi?
couldn't he pi?
couldn't we pi?
couldn't you pi?
couldn't they pi?

V-ing form

couldn't I be piing?
couldn't you be piing?
couldn't he be piing?
couldn't we be piing?
couldn't you be piing?
couldn't they be piing?

Perfect

couldn't I have pied?
couldn't you have pied?
couldn't he have pied?
couldn't we have pied?
couldn't you have pied?
couldn't they have pied?

V-ing perfect

couldn't I have been piing?
couldn't you have been piing?
couldn't he have been piing?
couldn't we have been piing?
couldn't you have been piing?
couldn't they have been piing?

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