iteration of array cartesian product in awk

[Peng Yu]

Hi,

In python, it is relatively easy to iterate the cartesian production
of a number of lists.

for x in izip(l1, l2, ...):
    print x

https://stackoverflow.com/questions/12237283/how-to-iterate-in-a-cartesian-product-of-lists

Note that, in the above example, the number of lists is known at the
program time. But in my case, it is unknown at program time but only
at runtime.

Is there an easy way to implement the iteration of the cartesian
product of a number of arrays (the number is only known at run time)
in awk?

-- 
Regards,
Peng