Q_{1}: (-21, 0)
Q_{2}: (-77, 56)
Q_{3}: (-56, 126)
Q_{4}: (0, 126)
P_{1}: (-20, -1)
a = CurveCartesian(((1 - t)^(3) * Q_{1}) + (((3 * (1 - t)^(2)) * t) * Q_{2}) + (((3 * (1 - t)) * t^(2)) * Q_{3}) + (t^(3) * Q_{4}), t, 0, 1)
P_{2}: (-18, -4)
P_{3}: (-17, -10)
b = CurveCartesian(((1 - t)^(3) * Q_{1}) + (((3 * (1 - t)^(2)) * t) * P_{1}) + (((3 * (1 - t)) * t^(2)) * P_{2}) + (t^(3) * P_{3}), t, 0, 1)
V_{1}: (-52, 86)
V_{3} = (40.26548311338737, 138.68988192719917)
V_{2}: ((-x(V_{3})), y(V_{3}))
V_{4}: (52, 86)
c = CurveCartesian(((1 - t)^(3) * V_{1}) + (((3 * (1 - t)^(2)) * t) * V_{2}) + (((3 * (1 - t)) * t^(2)) * V_{3}) + (t^(3) * V_{4}), t, 0, 1)
C_{1}: (61.5, 141)
C_{4}: (18, 123)
C_{2}: (60, 145)
C_{3}: (42.5, 140.5)
d = CurveCartesian(((1 - t)^(3) * C_{1}) + (((3 * (1 - t)^(2)) * t) * C_{2}) + (((3 * (1 - t)) * t^(2)) * C_{3}) + (t^(3) * C_{4}), t, 0, 1)
C_{7}: (49, 96)
C_{5}: (2 * C_{1}) - C_{2}
C_{6}: (58, 112)
e = CurveCartesian(((1 - t)^(3) * C_{1}) + (((3 * (1 - t)^(2)) * t) * C_{5}) + (((3 * (1 - t)) * t^(2)) * C_{6}) + (t^(3) * C_{7}), t, 0, 1)