English verb conjugation COULD AUTOGRAPH

Regular verb: autograph - autographed - autographed

Affirmation

Simple form

I could autograph
you could autograph
he could autograph
we could autograph
you could autograph
they could autograph

V-ing form

I could be autographing
you could be autographing
he could be autographing
we could be autographing
you could be autographing
they could be autographing

Perfect

I could have autographed
you could have autographed
he could have autographed
we could have autographed
you could have autographed
they could have autographed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I autograph?
could you autograph?
could he autograph?
could we autograph?
could you autograph?
could they autograph?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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