mu 1 2 3
mu 3 2 4
mu 3 4 5
pwr 4 5 6
mu 3 5 7
mu 7 3 8
pwr 12 8 9
mu 3 8 10
mu 10 2 11
pwr 43 11 12
mu 7 5 13
mu 4 13 14
mu 4 14 15
mu 4 15 16
pwr 9 16 17
mu 7 16 18
mu 4 18 19
mu 14 19 20
echo "Classes 4A 7G 7I 14C 63A 73A"
oup 6   20 19 6 17 12 9