D12121212121313233313123231323223313132322331323323133313231323221123231   >>    D1212121212131323331312323132322331313232233132332313331323132322112323   <<    D12121212121313233313123231323223313132322331323323133313231323221123233   >>      D12121212121313233313123231323223313132322331323323133313231323221123232   >>