mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 5 4 6
mu 6 2 7
mu 6 4 8
mu 6 8 9
mu 3 7 10
mu 6 7 11
oup 7 6 3 2 9 4 10 11
echo "Classes 5AB 7AB 4D 6A 8A 8B 8C"
# echo "are in 6 3 2 9 4 10 11"