English verb conjugation COULD OBTAIN

Regular verb: obtain - obtained - obtained

Affirmation

Simple form

I could obtain
you could obtain
he could obtain
we could obtain
you could obtain
they could obtain

V-ing form

I could be obtaining
you could be obtaining
he could be obtaining
we could be obtaining
you could be obtaining
they could be obtaining

Perfect

I could have obtained
you could have obtained
he could have obtained
we could have obtained
you could have obtained
they could have obtained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I obtain?
could you obtain?
could he obtain?
could we obtain?
could you obtain?
could they obtain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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