English verb conjugation COULD VEIN

Regular verb: vein - veined - veined

Affirmation

Simple form

I could vein
you could vein
she could vein
we could vein
you could vein
they could vein

V-ing form

I could be veining
you could be veining
she could be veining
we could be veining
you could be veining
they could be veining

Perfect

I could have veined
you could have veined
she could have veined
we could have veined
you could have veined
they could have veined

V-ing perfect

I could have been veining
you could have been veining
she could have been veining
we could have been veining
you could have been veining
they could have been veining

Negation

Simple form

I couldn't vein
you couldn't vein
she couldn't vein
we couldn't vein
you couldn't vein
they couldn't vein

V-ing form

I couldn't be veining
you couldn't be veining
she couldn't be veining
we couldn't be veining
you couldn't be veining
they couldn't be veining

Perfect

I couldn't have veined
you couldn't have veined
she couldn't have veined
we couldn't have veined
you couldn't have veined
they couldn't have veined

V-ing perfect

I couldn't have been veining
you couldn't have been veining
she couldn't have been veining
we couldn't have been veining
you couldn't have been veining
they couldn't have been veining

Interrogative form

Simple form

could I vein?
could you vein?
could she vein?
could we vein?
could you vein?
could they vein?

V-ing form

could I be veining?
could you be veining?
could she be veining?
could we be veining?
could you be veining?
could they be veining?

Perfect

could I have veined?
could you have veined?
could she have veined?
could we have veined?
could you have veined?
could they have veined?

V-ing perfect

could I have been veining?
could you have been veining?
could she have been veining?
could we have been veining?
could you have been veining?
could they have been veining?

Interro-negative form

Simple form

couldn't I vein?
couldn't you vein?
couldn't she vein?
couldn't we vein?
couldn't you vein?
couldn't they vein?

V-ing form

couldn't I be veining?
couldn't you be veining?
couldn't she be veining?
couldn't we be veining?
couldn't you be veining?
couldn't they be veining?

Perfect

couldn't I have veined?
couldn't you have veined?
couldn't she have veined?
couldn't we have veined?
couldn't you have veined?
couldn't they have veined?

V-ing perfect

couldn't I have been veining?
couldn't you have been veining?
couldn't she have been veining?
couldn't we have been veining?
couldn't you have been veining?
couldn't they have been veining?

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