REG5 - 1 polyh which is union of 3 cubes
0.0 30.0 20.0 40.0 0.05 40.0 0.25 0.5 25 500 1 0.8
17 12 0 1 0 2 0

 0.0  0.0  0.0
 1.0  0.0  0.0
 0.0  1.0  0.0
 0.0  0.0  1.0
-1.0  0.0  0.0
 0.0 -1.0  0.0
 0.0  0.0 -1.0
 1.0  0.0 -1.0
-1.0  0.0  1.0
 1.0 -1.0  0.0
 0.0 -1.0  1.0
 0.0  1.0 -1.0
-1.0  1.0  0.0
 1.0 -1.0  1.0
 1.0  1.0 -1.0
-1.0  1.0  1.0
 1.0  1.0  1.0

1 5 9 13 17 21 25 29 33 37 43 49 55
1 2 3  4  5  6  7  8  9 10 11 12

1 2 8 7
1 7 12 3
1 3 13 5
1 5 9 4
1 4 11 6
1 6 10 2
7 8 15 12
5 13 16 9
6 10 14 11
16 9 4 11 14 17
16 13 3 12 15 17
15 8 2 10 14 17

1 13

-1 -2 -3 -4 -5 -6 -7 -8 9 10 -11 -12