mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 6 3 7
mu 6 4 8
mu 3 7 9
mu 9 7 10
mu 10 4 11
mu 1 11 12
mu 6 11 13
mu 5 12 14
mu 11 14 15
mu 5 14 16
mu 5 16 17
mu 10 16 18
oup 14 15 14 13 7 9 12 10 11 18 17 16 3 8 6
echo "Classes 4D 6E 6F 8A 8B 9A 10C 12A 12B 12C 15C 17A 21A 30A"

