C12121212311232322331313232233132333132333132233132313231322123311   >>    C1212121231123232233131323223313233313233313223313231323132212331   <<    C12121212311232322331313232233132333132333132233132313231322123313   >>      C12121212311232322331313232233132333132333132233132313231322123312   >>