mu 1 2 3
mu 3 2 1
iv 2 3
pwr 6 1 4
iv 4 5
mu 2 4 6
mu 2 5 7
mu 3 4 2
mu 3 5 4
mu 4 6 5
mu 4 7 8
mu 8 3 4
pwr 3 5 8
mu 8 3 5
mu 2 6 8
mu 2 7 6
mu 8 6 7
mu 7 4 6
mu 5 5 7
mu 7 6 2
## Answer is in 1 and 2, but the group also contains 5, 6 and 7.
## Both 2 and 7 are in the group generated by 5 and 6.
