English verb conjugation
COULD QUOIN

Regular verb: quoin - quoined - quoined

Affirmation

Simple form	V-ing form
I could quoin you could quoin she could quoin we could quoin you could quoin they could quoin	I could be quoining you could be quoining she could be quoining we could be quoining you could be quoining they could be quoining
Perfect	V-ing perfect
I could have quoined you could have quoined she could have quoined we could have quoined you could have quoined they could have quoined	I could have been quoining you could have been quoining she could have been quoining we could have been quoining you could have been quoining they could have been quoining

Negation

Simple form	V-ing form
I could not quoin you could not quoin she could not quoin we could not quoin you could not quoin they could not quoin	I could not be quoining you could not be quoining she could not be quoining we could not be quoining you could not be quoining they could not be quoining
Perfect	V-ing perfect
I could not have quoined you could not have quoined she could not have quoined we could not have quoined you could not have quoined they could not have quoined	I could not have been quoining you could not have been quoining she could not have been quoining we could not have been quoining you could not have been quoining they could not have been quoining

Interrogative form

Simple form	V-ing form
could I quoin? could you quoin? could she quoin? could we quoin? could you quoin? could they quoin?	could I be quoining? could you be quoining? could she be quoining? could we be quoining? could you be quoining? could they be quoining?
Perfect	V-ing perfect
could I have quoined? could you have quoined? could she have quoined? could we have quoined? could you have quoined? could they have quoined?	could I have been quoining? could you have been quoining? could she have been quoining? could we have been quoining? could you have been quoining? could they have been quoining?

Interro-negative form

Simple form	V-ing form
could I not quoin? could you not quoin? could she not quoin? could we not quoin? could you not quoin? could they not quoin?	could I not be quoining? could you not be quoining? could she not be quoining? could we not be quoining? could you not be quoining? could they not be quoining?
Perfect	V-ing perfect
could I not have quoined? could you not have quoined? could she not have quoined? could we not have quoined? could you not have quoined? could they not have quoined?	could I not have been quoining? could you not have been quoining? could she not have been quoining? could we not have been quoining? could you not have been quoining? could they not have been quoining?