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
mu 10 10 11
mu 10 11 1
mu 7 9 2
mu 4 4 3
iv 3 4
mu 4 2 6
mu 6 3 2
pwr 5 5 6
iv 6 7
mu 6 1 8
mu 8 7 1
