chor 1 2
chor 2 18
mu 1 2 3  # cd
com 1 2 4
chor 4 3
mu 2 2 5 #d^2
com 1 5 6
chor 6 3
mu 5 2 7 #d^3
com 1 7 8
chor 8 3
mu 7 2 9 #d^4
com 1 9 10
chor 10 3
mu 9 2 11 #d^5
com 1 11 12
chor 12 3
mu 11 2 13 #d^6
com 1 13 14
chor 14 2
mu 13 2 15 #d^7
com 1 15 16
chor 16 2
mu 15 2 17 #d^8
com 1 17 18
chor 18 3
mu 17 2 18
mu 1 18 19
chor 19 4

# [c,dcdcd^-2cd]
mu 2 3 20
iv 2 21  # d^-1
mu 1 21 22  #cd^-1
mu 22 21 23 #cd^-2
mu 20 23 24
mu 24 3 25
com 1 25 26
chor 26 1

# [c,d^2cd^2cd^-4cd^2]
mu 5 1 27
mu 27 27 28
pwr 4 21 29
mu 28 29 30
mu 3 2 31 # cd^2
mu 30 31 32
com 1 32 33
chor 33 1

# ((cd^3)^4cd^-4)^2
mu 31 2 34
pwr 4 34 35
mu 1 29 36 #cd^-4
mu 35 36 37
chor 37 2

mu 34 2 35 #cd^4
mu 35 2 36
mu 35 36 37
mu 37 36 38
chor 38 5

mu 3 23 39
mu 39 21 40
chor 40 8