English verb conjugation COULD APPEAR

Regular verb: appear - appeared - appeared

Affirmation

Simple form

I could appear
you could appear
he could appear
we could appear
you could appear
they could appear

V-ing form

I could be appearing
you could be appearing
he could be appearing
we could be appearing
you could be appearing
they could be appearing

Perfect

I could have appeared
you could have appeared
he could have appeared
we could have appeared
you could have appeared
they could have appeared

V-ing perfect

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

Negation

Simple form

I couldn't appear
you couldn't appear
he couldn't appear
we couldn't appear
you couldn't appear
they couldn't appear

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I appear?
could you appear?
could he appear?
could we appear?
could you appear?
could they appear?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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