chor 1 2
chor 2 3
mu 1 2 3
chor 3 12
pwr 5 3 4
com 1 2 5
mu 4 5 6
iv 2 7
mu 1 7 8
pwr 3 8 9
mu 6 9 10
mu 10 3 11
com 1 7 8
mu 11 8 12
mu 12 8 13
mu 13 3 14
mu 14 3 15
mu 15 9 16
mu 16 8 17
chor 17 1
