English verb conjugation COULD DISAPPEAR

Regular verb: disappear - disappeared - disappeared

Affirmation

Simple form

I could disappear
you could disappear
he could disappear
we could disappear
you could disappear
they could disappear

V-ing form

I could be disappearing
you could be disappearing
he could be disappearing
we could be disappearing
you could be disappearing
they could be disappearing

Perfect

I could have disappeared
you could have disappeared
he could have disappeared
we could have disappeared
you could have disappeared
they could have disappeared

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I disappear?
could you disappear?
could he disappear?
could we disappear?
could you disappear?
could they disappear?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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