pwr 4 1 4
chor 4 1
iv 1 3
pwr 2 3 4
pwr 4 2 5
mu 4 5 6
chor 6 1
mu 1 2 4
mu 2 1 5
mu 1 5 6
mu 4 6 7
mu 2 4 8
mu 5 8 9
mu 7 9 10
chor 10 1
iv 1 4
iv 2 5
mu 5 1 6
mu 4 6 7
mu 4 5 8
mu 2 8 9
mu 7 9 10
mu 2 4 11
mu 1 11 12
mu 1 2 13
mu 5 13 14
mu 12 14 15
mu 10 15 16
chor 16 1