mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 5 4 7
mu 6 2 8
mu 3 6 9
mu 7 2 10
mu 6 7 11
mu 8 4 12
mu 9 8 13
mu 8 10 14
mu 5 10 15
mu 9 10 16
mu 11 7 17
mu 11 12 18
mu 15 6 19
mu 5 15 20
mu 16 14 21
mu 17 6 22
mu 11 17 23
mu 5 16 24
mu 24 16 25
mu 6 9 26
mu 26 9 27
mu 23 12 28
oup 12 16 15 22 23 7 3 8 18 17 27 14 25
oup 13 21 19 9 28 12 20 5 6 2 4 13 10 11
echo "Classes 6F 8A 8B 12B 12C 17AB 21AB 30AB 4I 6I 6J 6K"
echo "6L 8D 8E 12D 12E 12F 12G 12H 14A 18A 20A 24A 30C"

