Connection table for BDE
  21  22  45
 C
 C
 C
 N
 C
 C
 C
 O
 N
 N
 C
 C
 C
 C
BR
 C
 O
 C
BR
 C
 O
   1   2
   1   6
   2   3
   3   4
   4   5
   5   6
   6   7
   7   8
   7   9
   9  10
  10  11
  11  12
  12  13
  12  20
  13  14
  14  15
  14  16
  16  17
  16  18
  18  19
  18  20
  20  21
   6   1   2   3   0.0   5.0
   2   1   6   5   0.0   5.0
   2   1   6   7 180.0   5.0
   1   2   3   4   0.0   5.0
   2   3   4   5   0.0   5.0
   3   4   5   6   0.0   5.0
   4   5   6   1   0.0   5.0
   4   5   6   7 180.0   5.0
   1   6   7   8   0.0   5.0
   1   6   7   9 180.0   5.0
   5   6   7   8 180.0   5.0
   5   6   7   9   0.0   5.0
   6   7   9  10 180.0   5.0
   8   7   9  10   0.0   5.0
   7   9  10  11 180.0   5.0
   9  10  11  12 180.0   5.0
  10  11  12  13 180.0   5.0
  10  11  12  20   0.0   5.0
  11  12  13  14 180.0   5.0
  20  12  13  14   0.0   5.0
  11  12  20  18 180.0   5.0
  11  12  20  21   0.0   5.0
  13  12  20  18   0.0   5.0
  13  12  20  21 180.0   5.0
  12  13  14  15 180.0   5.0
  12  13  14  16   0.0   5.0
  13  14  16  17 180.0   5.0
  13  14  16  18   0.0   5.0
  15  14  16  17   0.0   5.0
  15  14  16  18 180.0   5.0
  14  16  18  19 180.0   5.0
  14  16  18  20   0.0   5.0
  17  16  18  19   0.0   5.0
  17  16  18  20 180.0   5.0
  16  18  20  12   0.0   5.0
  16  18  20  21 180.0   5.0
  19  18  20  12 180.0   5.0
  19  18  20  21   0.0   5.0
   6   1   5   7   0.0   5.0
   7   6   8   9   0.0   5.0
  12  11  13  20   0.0   5.0
  14  13  15  16   0.0   5.0
  16  14  17  18   0.0   5.0
  18  16  19  20   0.0   5.0
  20  12  18  21   0.0   5.0