pwr 3 1 4
chor 4 1
pwr 7 2 4
chor 4 1
mu 2 1 4
mu 1 4 5
mu 1 2 6
mu 2 6 7
mu 5 7 8
pwr 2 8 9
chor 9 1
iv 1 4
iv 2 5
mu 4 5 6
mu 1 2 7
mu 6 7 8
pwr 2 8 9
chor 9 1
iv 2 3
pwr 3 3 4
mu 1 4 5
mu 5 1 6
iv 2 3
pwr 2 3 7
mu 1 7 8
mu 4 8 9
mu 6 9 10
pwr 2 10 11
chor 11 1
mu 1 2 4
pwr 2 2 5
mu 1 5 6
mu 4 6 7
iv 1 8
mu 2 1 9
mu 8 9 10
iv 2 3
pwr 2 3 11
mu 11 1 12
mu 10 12 13
mu 7 13 14
pwr 3 2 15
iv 2 3
pwr 3 3 16
mu 1 16 17
mu 15 17 18
mu 18 17 19
mu 14 19 20
chor 20 1