mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 4 2 3
mu 5 3 2
mu 2 3 5
pwr 17 6 2
pwr 21 4 3
mu 2 3 7
iv 7 2
mu 2 1 3
mu 3 7 1
pwr 16 4 2
pwr 30 6 3
mu 2 3 7
iv 7 6
mu 6 5 3
mu 3 7 2