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 couldn't subjoin
you couldn't subjoin
he couldn't subjoin
we couldn't subjoin
you couldn't subjoin
they couldn't subjoin

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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