mu 1 2 3
mu 3 2 4
mu 2 3 5
mu 1 5 11
mu 5 1 12
iv 12 13
mu 13 11 12
pwr 4 12 11
mu 5 11 6
### 6 = b1.

mu 4 3 11
mu 3 4 5
pwr 5 11 12
pwr 5 5 13
mu 12 13 5
### 5 = a1.

mu 3 3 1
mu 1 1 2
mu 1 2 7
mu 4 4 11
mu 11 11 12
mu 2 11 13
mu 3 13 14
mu 3 12 11
mu 2 7 3
mu 1 3 2
mu 14 11 1
mu 13 4 14
mu 12 14 13
mu 2 13 11
pwr 10 4 12
mu 3 12 13
mu 13 7 4
iv 11 3
### 1 = o1.

pwr 3 5 2
mu 2 6 7
pwr 4 6 11
mu 11 2 12
mu 2 11 13
mu 5 13 14
mu 11 11 13
mu 5 6 11
mu 11 13 2
mu 5 14 13
pwr 4 7 5
pwr 6 11 6
mu 13 12 11
mu 2 14 12
mu 12 11 13
iv 6 14
mu 5 14 11
mu 5 6 12
mu 11 12 2
mu 2 13 7
### y = c1.

mu 3 7 11
mu 11 4 2
### Answer in 1 and 2 (as usual).