English verb conjugation COULD VEIN

Regular verb: vein - veined - veined

Affirmation

Simple form

I could vein
you could vein
he could vein
we could vein
you could vein
they could vein

V-ing form

I could be veining
you could be veining
he could be veining
we could be veining
you could be veining
they could be veining

Perfect

I could have veined
you could have veined
he 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
he could have been veining
we could have been veining
you could have been veining
they could have been veining

Negation

Simple form

I could not vein
you could not vein
he could not vein
we could not vein
you could not vein
they could not vein

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I vein?
could you vein?
could he vein?
could we vein?
could you vein?
could they vein?

V-ing form

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

Perfect

could I have veined?
could you have veined?
could he 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 he have been veining?
could we have been veining?
could you have been veining?
could they have been veining?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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