I could republish you could republish she could republish we could republish you could republish they could republish
V-ing form
I could be republishing you could be republishing she could be republishing we could be republishing you could be republishing they could be republishing
Perfect
I could have republished you could have republished she could have republished we could have republished you could have republished they could have republished
V-ing perfect
I could have been republishing you could have been republishing she could have been republishing we could have been republishing you could have been republishing they could have been republishing
Negation
Simple form
I could not republish you could not republish she could not republish we could not republish you could not republish they could not republish
V-ing form
I could not be republishing you could not be republishing she could not be republishing we could not be republishing you could not be republishing they could not be republishing
Perfect
I could not have republished you could not have republished she could not have republished we could not have republished you could not have republished they could not have republished
V-ing perfect
I could not have been republishing you could not have been republishing she could not have been republishing we could not have been republishing you could not have been republishing they could not have been republishing
Interrogative form
Simple form
could I republish? could you republish? could she republish? could we republish? could you republish? could they republish?
V-ing form
could I be republishing? could you be republishing? could she be republishing? could we be republishing? could you be republishing? could they be republishing?
Perfect
could I have republished? could you have republished? could she have republished? could we have republished? could you have republished? could they have republished?
V-ing perfect
could I have been republishing? could you have been republishing? could she have been republishing? could we have been republishing? could you have been republishing? could they have been republishing?
Interro-negative form
Simple form
could I not republish? could you not republish? could she not republish? could we not republish? could you not republish? could they not republish?
V-ing form
could I not be republishing? could you not be republishing? could she not be republishing? could we not be republishing? could you not be republishing? could they not be republishing?
Perfect
could I not have republished? could you not have republished? could she not have republished? could we not have republished? could you not have republished? could they not have republished?
V-ing perfect
could I not have been republishing? could you not have been republishing? could she not have been republishing? could we not have been republishing? could you not have been republishing? could they not have been republishing?