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