[Figure 31]
[32] a a a a a
[33] b b b
[34] c c c
[35] a b a b a
[36] a b a
[37] b b a a
[38] b b b b@a a
[39] a@c b@d b@c@f
[40] a@b d@b c@c@f
[41] a@b@c
[42] c c@d d@b@a@c@f@f@f@f@e@f@f@f@f@e
[43] p@k@i@a@b@c@d@e@f@g@h
[44] a a@b@c
[45] c@d@b a@e f
[Figure 46]
[47] a b
[48] a b
[49] d a d b d c d
[50] f d f b b c c c c a
[51] b a c f d g b k
[52] a b c d
[53] a n a b c d c k f g g g h m m i
[54] a b c
[Figure 55]
[56] a a b
[57] b c c c c c c d
[58] a b c c
[59] a b c c b c
[60] a a b