C12121212311232322331313232233132333132333132233131133132212311   >>    C1212121231123232233131323223313233313233313223313113313221231   <<    C12121212311232322331313232233132333132333132233131133132212313   >>      C12121212311232322331313232233132333132333132233131133132212312   >>