lotto number generator

[gm]

Hi.
I am new to python so am still in learning phase.

I was thinking to make one program that will print out all possible 
combinations of 10 pairs. I think this is a good way for something 
"bigger" :-).

This is how this looks like:

1.) 1 2
2.) 1 2
3.) 1 2
4.) 1 2
5.) 1 2
6.) 1 2
7.) 1 2
8.) 1 2
9.) 1 2
10.) 1 2

So, i want to print out (in rows) each possible configuration but for 
all 10 pairs.

example:
1 1 1 2 2 2 2 1 1 1
2 2 2 1 1 1 1 2 2 2
1 1 2 2 1 1 2 2 1 1
etc.

What would be the best way to make something like this ?
Maybe some tutorial ?

GM