points
13
3.0 -1.5 0
3.0 -2.0 0
2.0 -3.0 0

1.0 -3.0 0
0.0 -2.0 0
0.0	 2.0 0
1.0  3.0 0
2.0  3.0 0
3.0  2.0 0
3.0  1.0 0
2.0  0.0 0
1.0  0.0 0
0.0  1.0 0

end points
lines
12
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
end lines