chor 1 2
chor 2 5
mu 1 2 3
com 1 2 33  # We got cd and [c,d] mixed up!
chor 33 3
mu 2 2 4
com 1 4 5
chor 5 4

iv 2 6    # d^-1
mu 1 6 7  # cd^-1
mu 7 6 8  # cd^-2
mu 3 2 9  # cd^2

pwr 4 3 10
mu 10 8 11
mu 11 7 12
mu 12 7 13
mu 13 8 14
chor 14 2

mu 2 3 15
mu 15 9 16
mu 16 8 17
mu 9 9 18  # cd^2cd^2
mu 17 18 19
mu 19 7 20
com 1 20 21
chor 21 1

mu 15 8 22
mu 22 7 23
pwr 3 8 24
mu 23 24 25
com 1 25 26
chor 26 1

mu 6 7 27
mu 27 9 28
mu 28 3 29
mu 29 18 30
mu 30 9 31
com 1 31 32
chor 32 1