Here are the codes for the Normal level of Rebel Assault.
These codes work at very least for the Macintosh version:
1. BOTHAN
2. HERGLIC
3. LEENI
4. THRAWN
5. LWYLL
6. MAZZIC
7. JULPA
8. MORRT
9. MUFTAK
10. RASKAR
11. JHOFF
12. ITHOR
13. UMWAK
14. ORLOK
15. NKLLON