English verb conjugation COULD PIN

Regular verb: pin - pinned - pinned

Affirmation

Simple form

I could pin
you could pin
she could pin
we could pin
you could pin
they could pin

V-ing form

I could be pinning
you could be pinning
she could be pinning
we could be pinning
you could be pinning
they could be pinning

Perfect

I could have pinned
you could have pinned
she could have pinned
we could have pinned
you could have pinned
they could have pinned

V-ing perfect

I could have been pinning
you could have been pinning
she could have been pinning
we could have been pinning
you could have been pinning
they could have been pinning

Negation

Simple form

I couldn't pin
you couldn't pin
she couldn't pin
we couldn't pin
you couldn't pin
they couldn't pin

V-ing form

I couldn't be pinning
you couldn't be pinning
she couldn't be pinning
we couldn't be pinning
you couldn't be pinning
they couldn't be pinning

Perfect

I couldn't have pinned
you couldn't have pinned
she couldn't have pinned
we couldn't have pinned
you couldn't have pinned
they couldn't have pinned

V-ing perfect

I couldn't have been pinning
you couldn't have been pinning
she couldn't have been pinning
we couldn't have been pinning
you couldn't have been pinning
they couldn't have been pinning

Interrogative form

Simple form

could I pin?
could you pin?
could she pin?
could we pin?
could you pin?
could they pin?

V-ing form

could I be pinning?
could you be pinning?
could she be pinning?
could we be pinning?
could you be pinning?
could they be pinning?

Perfect

could I have pinned?
could you have pinned?
could she have pinned?
could we have pinned?
could you have pinned?
could they have pinned?

V-ing perfect

could I have been pinning?
could you have been pinning?
could she have been pinning?
could we have been pinning?
could you have been pinning?
could they have been pinning?

Interro-negative form

Simple form

couldn't I pin?
couldn't you pin?
couldn't she pin?
couldn't we pin?
couldn't you pin?
couldn't they pin?

V-ing form

couldn't I be pinning?
couldn't you be pinning?
couldn't she be pinning?
couldn't we be pinning?
couldn't you be pinning?
couldn't they be pinning?

Perfect

couldn't I have pinned?
couldn't you have pinned?
couldn't she have pinned?
couldn't we have pinned?
couldn't you have pinned?
couldn't they have pinned?

V-ing perfect

couldn't I have been pinning?
couldn't you have been pinning?
couldn't she have been pinning?
couldn't we have been pinning?
couldn't you have been pinning?
couldn't they have been pinning?

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