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