C12121212311232322331313232233132333132313232223132313231333112331   >>    C1212121231123232233131323223313233313231323222313231323133311233   <<    C12121212311232322331313232233132333132313232223132313231333112333   >>      C12121212311232322331313232233132333132313232223132313231333112332   >>