I could originate you could originate she could originate we could originate you could originate they could originate
V-ing form
I could be originating you could be originating she could be originating we could be originating you could be originating they could be originating
Perfect
I could have originated you could have originated she could have originated we could have originated you could have originated they could have originated
V-ing perfect
I could have been originating you could have been originating she could have been originating we could have been originating you could have been originating they could have been originating
Negation
Simple form
I could not originate you could not originate she could not originate we could not originate you could not originate they could not originate
V-ing form
I could not be originating you could not be originating she could not be originating we could not be originating you could not be originating they could not be originating
Perfect
I could not have originated you could not have originated she could not have originated we could not have originated you could not have originated they could not have originated
V-ing perfect
I could not have been originating you could not have been originating she could not have been originating we could not have been originating you could not have been originating they could not have been originating
Interrogative form
Simple form
could I originate? could you originate? could she originate? could we originate? could you originate? could they originate?
V-ing form
could I be originating? could you be originating? could she be originating? could we be originating? could you be originating? could they be originating?
Perfect
could I have originated? could you have originated? could she have originated? could we have originated? could you have originated? could they have originated?
V-ing perfect
could I have been originating? could you have been originating? could she have been originating? could we have been originating? could you have been originating? could they have been originating?
Interro-negative form
Simple form
could I not originate? could you not originate? could she not originate? could we not originate? could you not originate? could they not originate?
V-ing form
could I not be originating? could you not be originating? could she not be originating? could we not be originating? could you not be originating? could they not be originating?
Perfect
could I not have originated? could you not have originated? could she not have originated? could we not have originated? could you not have originated? could they not have originated?
V-ing perfect
could I not have been originating? could you not have been originating? could she not have been originating? could we not have been originating? could you not have been originating? could they not have been originating?