k1 = 1 
k2 = 5000000 
k3 = 0.5 
k4 = 100000000 
k5 = 0.1 
k6 = 0.1 
k7 = 100000 
k8 = 10000000 
k9 = 0.1 
k10 = 0.05 
k11 = 0.1 
k12 = 1e-09 
k13 = 1.0001e-05 
k14 = 1e-08 
k15 = 1e-09 
k16 = 1.001e-05 
k17 = 1.0001e-05