D12121212121313233313123231323223313132322331323132233132333132313133112122331   >>    D1212121212131323331312323132322331313232233132313223313233313231313311212233   <<    D12121212121313233313123231323223313132322331323132233132333132313133112122333   >>      D12121212121313233313123231323223313132322331323132233132333132313133112122332   >>