k1 = 20; k2 = 40; k3 = 11/10; k4 = 2; k5 = 1; k6 = 1/50; k7 = 1/2; k8 = 3/20; k9 = 1; k10 = 1/100; k11 = 9/100; k12 = 1; k13 = 1; k14 = 1/10; k15 = 1100;