mu 1 2 11A
mu 11A 2 5A
mu 11A 5A 3
mu 3 2 6A
mu 11A 3 4
mu 4 5A 5
mu 5 2 8A
mu 11A 4 6
mu 6 2 4B
mu 11A 6 7
mu 7 11A 8
mu 8 5A 9
mu 9 5A 7A
oup 6 4B 5A 6A 7A 8A 11A
echo "Classes 4B 5A 6A 7A 8A 11A"