Need HSN Code for printed books (as a freelancer)

I work as a freelance designer and I have a query I hope you are the best person to ask for help as my accountant is not helping me at all (he is clueless). I recently printed some book for Secondary and Higher Secondary Section of a private school, I bought the paper with 12% GST charged by vendor and my printed charged me 18% GST for printing, while I am looking everywhere for a proper HSN Code I am getting codes which are asking me to either charge 0% or 5% on printed books.

 

I request you to guide me with a HSN code which can be used in my case, as I feel I should be charging 18% as I was charged.

 

Thanks in advance for your time, looking forward to your reply.