English verb conjugation COULD SUBJOIN

Regular verb: subjoin - subjoined - subjoined

Affirmation

Simple form

I could subjoin
you could subjoin
he could subjoin
we could subjoin
you could subjoin
they could subjoin

V-ing form

I could be subjoining
you could be subjoining
he could be subjoining
we could be subjoining
you could be subjoining
they could be subjoining

Perfect

I could have subjoined
you could have subjoined
he could have subjoined
we could have subjoined
you could have subjoined
they could have subjoined

V-ing perfect

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

Negation

Simple form

I could not subjoin
you could not subjoin
he could not subjoin
we could not subjoin
you could not subjoin
they could not subjoin

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I subjoin?
could you subjoin?
could he subjoin?
could we subjoin?
could you subjoin?
could they subjoin?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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