D12121212121313233313123231323223313132322331323323133313233111   >>    D1212121212131323331312323132322331313232233132332313331323311   <<    D12121212121313233313123231323223313132322331323323133313233113   >>      D12121212121313233313123231323223313132322331323323133313233112   >>