C313131323331311331322331322331311211331323331313331323331323132323312121   >>    C31313132333131133132233132233131121133132333131333132333132313232331212   <<    C313131323331311331322331322331311211331323331313331323331323132323312123   >>      C313131323331311331322331322331311211331323331313331323331323132323312122   >>