A = (2.3, -12.42)
B = (7.42, -0.56)
p = Line(A, B)
g = OrthogonalLine(B, p)
S_1 = Point(g)
k_1 = Circle(S_1, B)
S_2 = (10.54, -7.38)
E = (10.16, -4.64)
k_2 = Circle(S_2, E)
F = (2.22, 0.26)
e = Circle(B, F)
c' = Mirror(k_1, e)
d' = Mirror(k_2, e)
G = Intersect(c', g, 1)
h = OrthogonalLine(G, g)
i, j = Tangent(h, d')
k_3 = Mirror(j, e)
k_4 = Mirror(i, e)
S_4 = Center(k_4)
S_3 = Center(k_3)
a = 0 (slider from 0 to 5, step 1)