C12121212311232322331313232233132333132333132233132313231311123121   >>    C1212121231123232233131323223313233313233313223313231323131112312   <<    C12121212311232322331313232233132333132333132233132313231311123123   >>      C12121212311232322331313232233132333132333132233132313231311123122   >>