k1 = 2 
k2 = 4 
k3 = 1 
k4 = 2.5 
k5 = 5 
k6 = 2500 
k7 = 5 
k8 = 4000 
k9 = 200 
k10 = 10 
k11 = 20000000 
k12 = 0 
k13 = 0.1 
k14 = 1 
k15 = 0.01