C121213213331322331313331311331312111133131133131133132313331313233313121221   >>    C12121321333132233131333131133131211113313113313113313231333131323331312122   <<    C121213213331322331313331311331312111133131133131133132313331313233313121223   >>      C121213213331322331313331311331312111133131133131133132313331313233313121222   >>