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