l1_cross_l2 | l2_cross_l1
-------------+-------------
- 3 | -3
+ 3 | -3
</programlisting>
</para>
</entry>
l1_cross_l2 | l2_cross_l1
-------------+-------------
- 2 | -3
+ 2 | -2
</programlisting>
</para>
</entry>
l1_cross_l2 | l2_cross_l1
-------------+-------------
- -1 | 1
+ -1 | 1
</programlisting>
</para>
</entry>
l1_cross_l2 | l2_cross_l1
-------------+-------------
- -2 | 0
+ -2 | 2
</programlisting>
</para>
</entry>