mu 1 2 3
mu 3 2 4
pwr 18 4 5
mu 2 2 6
mu 3 4 7
mu 4 3 8
mu 7 8 3
iv 3 4
mu 6 4 2
mu 6 3 4
mu 2 4 6
pwr 9 6 4
mu 5 1 2
mu 3 4 1
