k1 = a1 k2 = a2 k3 = a3 k4 = b1 k5 = b2 k6 = alpha k7 = c1 k8 = c2 k9 = c3 k10 = c4 k11 = d1 k12 = d2 k13 = r1 k14 = r2 k15 = s k16 = p k17 = v k18 = compartment