k1 = 57/100; k2 = 5/2; k3 = 1; k4 = 13/2; k5 = 13/2; k6 = 3/2; k7 = 1; k8 = 1; k9 = 1; k10 = 1; k11 = 1; k12 = 1; k13 = 1; k14 = 1; k15 = 1;