C12121212311232322331313232233132333132333132233131323331323132321221   >>    C1212121231123232233131323223313233313233313223313132333132313232122   <<    C12121212311232322331313232233132333132333132233131323331323132321223   >>      C12121212311232322331313232233132333132333132233131323331323132321222   >>