English verb conjugation COULD PREOBTAIN

Regular verb: preobtain - preobtained - preobtained

Affirmation

Simple form

I could preobtain
you could preobtain
he could preobtain
we could preobtain
you could preobtain
they could preobtain

V-ing form

I could be preobtaining
you could be preobtaining
he could be preobtaining
we could be preobtaining
you could be preobtaining
they could be preobtaining

Perfect

I could have preobtained
you could have preobtained
he could have preobtained
we could have preobtained
you could have preobtained
they could have preobtained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I preobtain?
could you preobtain?
could he preobtain?
could we preobtain?
could you preobtain?
could they preobtain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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