c_1, x_1, x_2, x_3, x_5, x_6, 
c_1
-112*c_1^2+2*x_1*x_3+3*x_3
168*c_1^2+2*x_1*x_5+3*x_5
-8*x_1^2-38*x_1+392*x_2-39
64*c_1^5*x_1-72*c_1^5+2*x_1*x_6+3*x_6
