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 4 11
mu 3 11 12
mu 12 3 13
mu 13 4 14
mu 11 14 13
mu 13 13 1
mu 9 9 8
mu 9 8 7
iv 7 6
mu 6 1 5
mu 5 7 1
mu 4 10 9
pwr 15 9 8
iv 8 7
mu 7 2 6
mu 6 8 2