dx:X = [-10,10]
dy:Y = [-10,10]
dz:Z = [-10,10]
dt:T = [-10,10]


c1:Y^2*Z + 2*X*Y*T - 2*X - Z = 0
c2:2*Y*Z*T + X*T^2 - X - 2*Z = 0
c3:2 - X^3*Z +4*X*Y^2*Z + 4*X^2*Y*T + 2*Y^3*T + 4*X^2 - 10*Y^2 + 4*X*Z - 10*Y*T = 0
c4:2 - X*Z^3 +4*Y*Z^2*T + 4*X*Z*T^2 + 2*Y*T^3 + 4*X*Z + 4*Z^2 - 10*Y*T - 10*T^2 = 0
