chor 1 2
chor 2 3
mu 1 2 3
chor 3 23
com 1 2 4
chor 4 12
mu 2 3 5
com 1 5 6
chor 6 5
iv 2 7
mu 1 7 8
mu 3 8 9
mu 3 9 10
pwr 3 10 11
mu 9 8 12
pwr 3 12 13
mu 11 13 14
chor 14 1
pwr 3 9 15
mu 3 15 16
chor 16 4