C12121212311232322331313232233132333132333132233132313232112311311   >>    C1212121231123232233131323223313233313233313223313231323211231131   <<    C12121212311232322331313232233132333132333132233132313232112311313   >>      C12121212311232322331313232233132333132333132233132313232112311312   >>