D12121212121313233313123231323223313132322331323132233133313133313232222321   >>    D1212121212131323331312323132322331313232233132313223313331313331323222232   <<    D12121212121313233313123231323223313132322331323132233133313133313232222323   >>      D12121212121313233313123231323223313132322331323132233133313133313232222322   >>