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 3 8 9
mu 9 4 10
pwr 17 10 1
mu 7 10 5
pwr 5 5 2
iv 3 6
mu 6 1 7
mu 7 3 1
mu 4 4 5
iv 5 6
mu 6 2 7
mu 7 5 2