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