English verb conjugation COULD PREWORK

Regular verb: prework - preworked - preworked

Affirmation

Simple form

I could prework
you could prework
he could prework
we could prework
you could prework
they could prework

V-ing form

I could be preworking
you could be preworking
he could be preworking
we could be preworking
you could be preworking
they could be preworking

Perfect

I could have preworked
you could have preworked
he could have preworked
we could have preworked
you could have preworked
they could have preworked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I prework?
could you prework?
could he prework?
could we prework?
could you prework?
could they prework?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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