k33*x2 - k32*x1 - k21*x1*x3*x5 
k32*x1 - k33*x2 
k14 - k12*x3 + k13*x4 - k21*x1*x3*x5 
k12*x3 - k13*x4 - k16*x4 + k22*x8 
k15 - k12*x5 + k13*x6 - k21*x1*x3*x5 
k12*x5 - k13*x6 - k17*x6 + k22*x8 
k21*x1*x3*x5 - k12*x7 
k12*x7 - k18*x8 - k22*x8 
k24*x15 - k23*x9 - k27*x8*x9 
k26*x16 - k25*x10 + k29*x13 - k28*x10*x11 
k24*x17 - k23*x11 + 2*k29*x12 + k29*x13 - 2*k28*x11^2 + k27*x8*x9 - k28*x10*x11 
k28*x11^2 - k30*x12 - k29*x12 
k28*x10*x11 - k30*x13 - k29*x13 
k22*x8 - k19*x14 
k23*x9 - k24*x15 + k31*x17 
k25*x10 - k26*x16 + k29*x19 - k28*x16*x17 
k23*x11 - k24*x17 + 2*k29*x18 + k29*x19 - k31*x17 - 2*k28*x17^2 - k28*x16*x17 
k30*x12 - k29*x18 + k28*x17^2 
k30*x13 - k29*x19 + k28*x16*x17 
x1 - k37 
x2 - k38 
x3 - k39 
x4 - k40 
x5 - k41 
x6 - k42 
x7 - k43 
x8 - k44 
x9 - k45 
x10 - k46 
x11 - k47 
x12 - k48 
x13 - k49 
x14 - k50 
x15 - k51 
x16 - k52 
x17 - k53 
x18 - k54 
x19 - k55 
x10 - k56 + x13 + x16 + x19 
x9 - k57 + x11 + 2*x12 + x13 + x15 + x17 + 2*x18 + x19 
