#  type  matter  c    de maxpath  / x y z  a  b c 
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#eq   cut 0.5d0
#eq  ncut -0.5d0  
#eq   a   2
#eq   b   30
#eq   c   1.9d0

1   box  pb   0  0  0   / 0  0  0    a   b c  / 2 3 4 5
2   prism hollow  0  0  0   / 0  0  0    cut  b    0  cut
3   prism hollow  0  0  0   / 0  0  c    cut  b    0  ncut
4   prism hollow  0  0  0   / a  0  0    ncut  b   0   cut
5   prism hollow  0  0  0   / a  0  c    ncut  b  0   ncut
6   box_w sp  0  0  0   / -1 -1 -1   4    32  3.9
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