Hello list,
I am trying to generate data according to the following pattern:

Obs A B C
----------------
1 0 0 0
2 0 0 1
3 0 1 0
4 0 1 1
5 1 0 0
6 1 0 1
7 1 1 0
8 1 1 1

Any help would be appreciated.
Thanks
André