English verb conjugation
COULD CONJOIN

Regular verb: conjoin - conjoined - conjoined

Affirmation

Simple form	V-ing form
I could conjoin you could conjoin he could conjoin we could conjoin you could conjoin they could conjoin	I could be conjoining you could be conjoining he could be conjoining we could be conjoining you could be conjoining they could be conjoining
Perfect	V-ing perfect
I could have conjoined you could have conjoined he could have conjoined we could have conjoined you could have conjoined they could have conjoined	I could have been conjoining you could have been conjoining he could have been conjoining we could have been conjoining you could have been conjoining they could have been conjoining

Negation

Simple form	V-ing form
I could not conjoin you could not conjoin he could not conjoin we could not conjoin you could not conjoin they could not conjoin	I could not be conjoining you could not be conjoining he could not be conjoining we could not be conjoining you could not be conjoining they could not be conjoining
Perfect	V-ing perfect
I could not have conjoined you could not have conjoined he could not have conjoined we could not have conjoined you could not have conjoined they could not have conjoined	I could not have been conjoining you could not have been conjoining he could not have been conjoining we could not have been conjoining you could not have been conjoining they could not have been conjoining

Interrogative form

Simple form	V-ing form
could I conjoin? could you conjoin? could he conjoin? could we conjoin? could you conjoin? could they conjoin?	could I be conjoining? could you be conjoining? could he be conjoining? could we be conjoining? could you be conjoining? could they be conjoining?
Perfect	V-ing perfect
could I have conjoined? could you have conjoined? could he have conjoined? could we have conjoined? could you have conjoined? could they have conjoined?	could I have been conjoining? could you have been conjoining? could he have been conjoining? could we have been conjoining? could you have been conjoining? could they have been conjoining?

Interro-negative form

Simple form	V-ing form
could I not conjoin? could you not conjoin? could he not conjoin? could we not conjoin? could you not conjoin? could they not conjoin?	could I not be conjoining? could you not be conjoining? could he not be conjoining? could we not be conjoining? could you not be conjoining? could they not be conjoining?
Perfect	V-ing perfect
could I not have conjoined? could you not have conjoined? could he not have conjoined? could we not have conjoined? could you not have conjoined? could they not have conjoined?	could I not have been conjoining? could you not have been conjoining? could he not have been conjoining? could we not have been conjoining? could you not have been conjoining? could they not have been conjoining?