mu 1 2 4
mu 4 2 5
mu 5 4 6
mu 6 5 7
pwr 3 7 8
mu 4 1 9
mu 5 1 10
pwr 10 5 1
mu 5 2 3
mu 5 5 7
pwr 3 2 5
mu 3 3 11
mu 2 11 12
mu 12 9 11
iv 11 2
mu 2 8 9
mu 9 11 2
mu 5 7 8
mu 8 10 5
mu 6 4 7
mu 7 3 4
mu 4 4 3
iv 5 4
mu 4 3 6
mu 6 5 3
oup 3 1 2 3