k1 = alpha_1
k2 = alpha_2
k3 = alpha_3
k4 = beta_1
k5 = delta
k6 = beta_2
k7 = alpha_4
k8 = K_S
k9 = k1
k10 = k2
k11 = g_31
k12 = g_21
k13 = g_22
k14 = g_32
k15 = g_41
k16 = g_42
k17 = g_43
k18 = g_44
k19 = f_12
k20 = f_14
k21 = f_23
k22 = f_34
k23 = epsilon
k24 = beta_3
k25 = rho
k26 = Bone