k2*x9 + k8*x10 + k21*x15 + k26*x16 - k1*x1*x5 - k7*x1*x5 - k22*x1*x6 - k27*x1*x6 
k3*x9 + k5*x7 + k24*x12 - k4*x2*x5 - k23*x2*x6 
k9*x10 + k11*x8 + k16*x13 + k19*x14 - k10*x3*x5 - k17*x3*x6 - k18*x3*x6 
k6*x7 + k12*x8 + k14*x11 - k13*x4*x6 
k2*x9 + k3*x9 + k5*x7 + k6*x7 + k8*x10 + k9*x10 + k11*x8 + k12*x8 - k1*x1*x5 - k4*x2*x5 - k7*x1*x5 - k10*x3*x5 
k14*x11 + k16*x13 + k19*x14 + k21*x15 + k24*x12 + k26*x16 - k13*x4*x6 - k17*x3*x6 - k18*x3*x6 - k22*x1*x6 - k23*x2*x6 - k27*x1*x6 
k4*x2*x5 - k6*x7 - k5*x7 
k10*x3*x5 - k12*x8 - k11*x8 
k1*x1*x5 - k3*x9 - k2*x9 
k7*x1*x5 - k9*x10 - k8*x10 
k13*x4*x6 - k15*x11 - k14*x11 
k23*x2*x6 - k25*x12 - k24*x12 
k15*x11 - k16*x13 + k17*x3*x6 
k18*x3*x6 - k20*x14 - k19*x14 
k20*x14 - k21*x15 + k22*x1*x6 
k25*x12 - k26*x16 + k27*x1*x6 
x6 - k29 + x11 + x12 + x13 + x14 + x15 + x16 
x5 - k30 + x7 + x8 + x9 + x10 
x1 - k31 + x2 + x3 + x4 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 
