C12121212311232322331313232233132333132333132233132313112331121   >>    C1212121231123232233131323223313233313233313223313231311233112   <<    C12121212311232322331313232233132333132333132233132313112331123   >>      C12121212311232322331313232233132333132333132233132313112331122   >>