mu 1 2 11A mu 11A 2 3 mu 11A 3 6B mu 11A 6B 6A mu 11A 6A 4 mu 4 3 10A mu 10A 6B 8B mu 4 6B 5 mu 5 3 8A oup 6 6A 6B 8A 8B 10A 11A echo "Classes 6A 6B 8A 8B 10A 11A"