A = (2, -1)
B = (2, 3)
a_2 = Segment(A, B)
C = (4, 3)
b = Segment(B, C)
D = (0, 3)
c = Segment(B, D)
E = (4, 4)
d = Segment(C, E)
F = (4, 2)
e = Segment(C, F)
G = (0, 4)
f = Segment(D, G)
H = (0, 2)
g = Segment(D, H)
I = (4.5, 4)
h = Segment(E, I)
J = (3.5, 4)
i = Segment(E, J)
K = (4.5, 2)
j = Segment(F, K)
L = (3.5, 2)
k = Segment(F, L)
M = (0.5, 2)
l = Segment(H, M)
N = (-0.5, 2)
m = Segment(H, N)
O = (0.5, 4)
n = Segment(G, O)
P = (-0.5, 4)
p = Segment(G, P)
Q = (4.5, 4.25)
q = Segment(I, Q)
R = (4.5, 3.75)
r = Segment(I, R)
S = (3.5, 4.25)
s = Segment(J, S)
T = (3.5, 3.75)
t = Segment(T, J)
U = (4.5, 2.25)
a_1 = Segment(K, U)
V = (4.5, 1.75)
b_1 = Segment(K, V)
W = (3.5, 2.25)
c_1 = Segment(L, W)
Z = (3.5, 1.75)
d_1 = Segment(L, Z)
A_1 = (0.5, 4.25)
e_1 = Segment(O, A_1)
B_1 = (0.5, 3.75)
f_1 = Segment(O, B_1)
C_1 = (-0.5, 4.25)
g_1 = Segment(P, C_1)
D_1 = (-0.5, 3.8)
h_1 = Segment(P, D_1)
E_1 = (0.5, 2.25)
i_1 = Segment(M, E_1)
F_1 = (0.5, 1.75)
j_1 = Segment(M, F_1)
G_1 = (-0.5, 2.25)
k_1 = Segment(N, G_1)
H_1 = (-0.5, 1.75)
l_1 = Segment(N, H_1)
a = 5 (slider from 0 to 5, step 1)