points
9
0.0 0.0 0
0.0 2.5 0
0.5 3.0 0
1.0 3.0 0
1.5 2.5 0
# dot
-0.2 -0.8 0
0    -1.0 0
0.2  -0.8 0
0    -0.6 0
end points
lines
8
0 1
1 2
2 3
3 4
# dot
5 6
6 7
7 8
8 6
end lines