mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 6 3 7
mu 6 7 8
pwr 12 8 1
pwr 3 5 2
pwr 3 4 5
iv 5 6
mu 6 2 7
mu 7 5 2
iv 3 4
mu 4 1 5
mu 5 3 1

