lx (left end-point, x-coordinate)
1,  0 1 
-1,
-1,
-1,
3,  0 1 -1 1
-1,
-1,
5,  0 1 -1 1 1 2
-1,
-1,
-1, 
3,  0 1 0 -1
-1,
ly (left end-point, y-coordinate)
5,  0 0 1 -1 1 -2
5,  0 0 1 0 0 3
5,  0 0 1 0 0 4
3,  0 0 0 2
8,  0 0 1 -1 1 0 0 0 -1
5,  0 0 1 0 0 1
5,  0 0 1 0 0 5
6,  0 0 1 -1 1 1 1
2,  0 0 1
-1,
5,  0 0 1 0 0 2
4,  0 0 0 1 -1
-1,
rx (right end-point, x-coordinate)
2,  1 0 1
3,  1 0 0 -1
1,  1 1
4,  1 0 0 0 3
1,  1 1
1,  1 1
4,  1 0 0 0 3
4,  1 1 0 0 -1
1,  1 1
3,  1 0 0 5
5,  1 0 0 0 3 -2
1,  1 1 
0,  1
ry (right end-point, y-coordinate)
6,  0 0 0 0 -1 0 1 
7,  0 0 0 0 0 0 0 1
3,  0 0 0 -1
8,  0 0 0 0 0 0 0 0 -1
4,  0 0 0 0 -1
3,  0 0 0 -1
7,  0 0 0 0 0 0 0 -3
3,  0 0 0 -1
4,  0 0 0 0 -1
-1,
8,  0 0 0 0 0 0 0 0 1
4,  0 0 0 0 -1
1,  0 1