C12121212311232322331313232233132333132333132233132313111121211   >>    C1212121231123232233131323223313233313233313223313231311112121   <<    C12121212311232322331313232233132333132333132233132313111121213   >>      C12121212311232322331313232233132333132333132233132313111121212   >>