D12121212121313233313123231323223313132322331323132233133313133221   >>    D1212121212131323331312323132322331313232233132313223313331313322   <<    D12121212121313233313123231323223313132322331323132233133313133223   >>      D12121212121313233313123231323223313132322331323132233133313133222   >>