mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 6 5 7
mu 7 4 8
mu 3 7 9
mu 9 6 10
mu 2 6 11
mu 11 7 12
mu 5 6 13
mu 13 8 14
mu 3 12 15
mu 6 7 16
iv 16 17
mu 4 8 18
mu 18 14 19
oup 11 19 5 12 8 10 14 15 6 17 3 7
echo "Classes 9A 14ABC 19ABC 26ABC 37ABC 6C 9D 18A 18B 21A 27B"
