C12121212311232322331313232233132313331311233131122112323223331   >>    C1212121231123232233131323223313231333131123313112211232322333   <<    C12121212311232322331313232233132313331311233131122112323223333   >>      C12121212311232322331313232233132313331311233131122112323223332   >>