English verb conjugation COULD HELIOGRAPH

Regular verb: heliograph - heliographed - heliographed

Affirmation

Simple form

I could heliograph
you could heliograph
he could heliograph
we could heliograph
you could heliograph
they could heliograph

V-ing form

I could be heliographing
you could be heliographing
he could be heliographing
we could be heliographing
you could be heliographing
they could be heliographing

Perfect

I could have heliographed
you could have heliographed
he could have heliographed
we could have heliographed
you could have heliographed
they could have heliographed

V-ing perfect

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

Negation

Simple form

I could not heliograph
you could not heliograph
he could not heliograph
we could not heliograph
you could not heliograph
they could not heliograph

V-ing form

I could not be heliographing
you could not be heliographing
he could not be heliographing
we could not be heliographing
you could not be heliographing
they could not be heliographing

Perfect

I could not have heliographed
you could not have heliographed
he could not have heliographed
we could not have heliographed
you could not have heliographed
they could not have heliographed

V-ing perfect

I could not have been heliographing
you could not have been heliographing
he could not have been heliographing
we could not have been heliographing
you could not have been heliographing
they could not have been heliographing

Interrogative form

Simple form

could I heliograph?
could you heliograph?
could he heliograph?
could we heliograph?
could you heliograph?
could they heliograph?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not heliograph?
could you not heliograph?
could he not heliograph?
could we not heliograph?
could you not heliograph?
could they not heliograph?

V-ing form

could I not be heliographing?
could you not be heliographing?
could he not be heliographing?
could we not be heliographing?
could you not be heliographing?
could they not be heliographing?

Perfect

could I not have heliographed?
could you not have heliographed?
could he not have heliographed?
could we not have heliographed?
could you not have heliographed?
could they not have heliographed?

V-ing perfect

could I not have been heliographing?
could you not have been heliographing?
could he not have been heliographing?
could we not have been heliographing?
could you not have been heliographing?
could they not have been heliographing?

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