(a) Voronoi-bar (Hamda et al., 2002), W = 0.2
(b) Bit-array (random initialization), W = 0.22
(c) Bit-array (identical initialization), W = 0.2
(d) One joining path of Y7E6
(e) Optimal bar-system (V7E6)
(f) Mapped topology (V7E6), W - 0.205
(g) Two joining paths of V4E3 (h) Optimal bar-system (2V4E3) (i) Mapped topology (2V4E3),
(2Y4E3) W = 0.2