C121213213331322331313331311331312111133131133131133132313223121   >>    C12121321333132233131333131133131211113313113313113313231322312   <<    C121213213331322331313331311331312111133131133131133132313223123   >>      C121213213331322331313331311331312111133131133131133132313223122   >>