#  type  matter  c    de maxpath  / x y z  a  b c 
1   pipe  Pb      0  0  0    / 0  0  0  5 8  10
2   pipe_y SCIN   0  0 0      / 0  +  0  5 8 10
3   pipe_x Cu     0  0 0      / +  0  0  5 8  10 
4   box_w  sp    0  0 0   / 0 0 0

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1   pipe_x  Cu      0  0  0    / 3  1  2  5 8  20
2   box_w sp   0  0 0   / 0 0 0
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