C12121212311232322331313232233132333132333132233132332313231323131221   >>    C1212121231123232233131323223313233313233313223313233231323132313122   <<    C12121212311232322331313232233132333132333132233132332313231323131223   >>      C12121212311232322331313232233132333132333132233132332313231323131222   >>