mu 1 2 3
mu 3 2 4
mu 3 4 5
mu 3 5 6
mu 6 3 7
mu 7 4 8
mu 1 6 3
mu 3 8 4
pwr 19 4 3
iv 3 4
mu 4 2 5
mu 5 3 2
pwr 10 6 1