inp 2
mu 1 2 3
mu 3 3 4
pwr 3 3 5
iv 2 6
mu 1 6 7
mu 5 7 8
mu 8 8 9
mu 9 4 10
mu 10 7 11
mu 11 7 12
pwr 2 12 13
oup 1 13
