File that I create a backup:
1. main.bak -> Wilmin's version
2. main.bak.2 -> my version (with reading the tile color on other file)
3. main2.cxx.bak -> previous version of changes (doesn't work correctly)
4. symmetrygroup.bak -> original version (Jane's)
5. symmetrygroup.h.bak -> original version (Jane's)
6. symmetrygroup2.cxx.bak -> previous version of changes (doesn't work correctly)
7. symmetrygroup2.h.bak -> previous version of changes (doesn't work correctly)

Files that are changes right now and working fine:
main.cxx
symmetrygroup.cxx
symmetrygroup.h

