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 8 3 10
pwr 3 8 2
mu 8 3 4
iv 4 5
mu 4 1 6
mu 6 5 1
pwr 20 9 8
iv 8 7
mu 7 2 3
mu 3 8 2

