chor 1 2
chor 2 4
mu 1 2 3
chor 3 10
com 1 2 4
chor 4 4
mu 3 2 5
mu 3 5 6
pwr 3 6 7
iv 2 8
mu 1 8 9
mu 7 9 10
mu 10 5 11
chor 11 1