A = (5, 2)
B = (0, -3)
C = (9, -2)
D = (9, -1)
E = (18, -1)
f = Segment(D, E)
F = (9, -3)
G = (18, -3)
g = Segment(F, G)
H = (4, 2)
I = (4, 6)
h = Segment(H, I)
J = (6, 2)
K = (6, 6)
i = Segment(J, K)
L = (0, -2)
M = (-4, -2)
j = Segment(L, M)
N = (0, -4)
O = (-4, -4)
k = Segment(N, O)
c = Circle(A, B, C)
P = (-4, -3)
Q = (18, -2)
R = (5, 6)
l = Segment(R, A)
m = Segment(C, Q)
n = Segment(B, P)