I can publish you can publish she can publish we can publish you can publish they can publish
V-ing form
I can be publishing you can be publishing she can be publishing we can be publishing you can be publishing they can be publishing
Perfect
I can have published you can have published she can have published we can have published you can have published they can have published
V-ing perfect
I can have been publishing you can have been publishing she can have been publishing we can have been publishing you can have been publishing they can have been publishing
Negation
Simple form
I cannot publish you cannot publish she cannot publish we cannot publish you cannot publish they cannot publish
V-ing form
I cannot be publishing you cannot be publishing she cannot be publishing we cannot be publishing you cannot be publishing they cannot be publishing
Perfect
I cannot have published you cannot have published she cannot have published we cannot have published you cannot have published they cannot have published
V-ing perfect
I cannot have been publishing you cannot have been publishing she cannot have been publishing we cannot have been publishing you cannot have been publishing they cannot have been publishing
Interrogative form
Simple form
can I publish? can you publish? can she publish? can we publish? can you publish? can they publish?
V-ing form
can I be publishing? can you be publishing? can she be publishing? can we be publishing? can you be publishing? can they be publishing?
Perfect
can I have published? can you have published? can she have published? can we have published? can you have published? can they have published?
V-ing perfect
can I have been publishing? can you have been publishing? can she have been publishing? can we have been publishing? can you have been publishing? can they have been publishing?
Interro-negative form
Simple form
can I not publish? can you not publish? can she not publish? can we not publish? can you not publish? can they not publish?
V-ing form
can I not be publishing? can you not be publishing? can she not be publishing? can we not be publishing? can you not be publishing? can they not be publishing?
Perfect
can I not have published? can you not have published? can she not have published? can we not have published? can you not have published? can they not have published?
V-ing perfect
can I not have been publishing? can you not have been publishing? can she not have been publishing? can we not have been publishing? can you not have been publishing? can they not have been publishing?