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