English verb conjugation
COULD SUBJOIN

Regular verb: subjoin - subjoined - subjoined

Affirmation

Simple form	V-ing form
I could subjoin you could subjoin she could subjoin we could subjoin you could subjoin they could subjoin	I could be subjoining you could be subjoining she could be subjoining we could be subjoining you could be subjoining they could be subjoining
Perfect	V-ing perfect
I could have subjoined you could have subjoined she could have subjoined we could have subjoined you could have subjoined they could have subjoined	I could have been subjoining you could have been subjoining she could have been subjoining we could have been subjoining you could have been subjoining they could have been subjoining

Negation

Simple form	V-ing form
I could not subjoin you could not subjoin she could not subjoin we could not subjoin you could not subjoin they could not subjoin	I could not be subjoining you could not be subjoining she could not be subjoining we could not be subjoining you could not be subjoining they could not be subjoining
Perfect	V-ing perfect
I could not have subjoined you could not have subjoined she could not have subjoined we could not have subjoined you could not have subjoined they could not have subjoined	I could not have been subjoining you could not have been subjoining she 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	V-ing form
could I subjoin? could you subjoin? could she subjoin? could we subjoin? could you subjoin? could they subjoin?	could I be subjoining? could you be subjoining? could she be subjoining? could we be subjoining? could you be subjoining? could they be subjoining?
Perfect	V-ing perfect
could I have subjoined? could you have subjoined? could she have subjoined? could we have subjoined? could you have subjoined? could they have subjoined?	could I have been subjoining? could you have been subjoining? could she have been subjoining? could we have been subjoining? could you have been subjoining? could they have been subjoining?

Interro-negative form

Simple form	V-ing form
could I not subjoin? could you not subjoin? could she not subjoin? could we not subjoin? could you not subjoin? could they not subjoin?	could I not be subjoining? could you not be subjoining? could she not be subjoining? could we not be subjoining? could you not be subjoining? could they not be subjoining?
Perfect	V-ing perfect
could I not have subjoined? could you not have subjoined? could she not have subjoined? could we not have subjoined? could you not have subjoined? could they not have subjoined?	could I not have been subjoining? could you not have been subjoining? could she not have been subjoining? could we not have been subjoining? could you not have been subjoining? could they not have been subjoining?