Connection table for BRG
  12  13  29
 N
 C
 N
 C
 N
 N
 C
 O
 C
 N
 C
BR
   1   2
   1  11
   2   3
   2   9
   3   4
   4   5
   4   6
   6   7
   7   8
   7   9
   9  10
  10  11
  11  12
  11   1   2   3 180.0   5.0
  11   1   2   9   0.0   5.0
   2   1  11  10   0.0   5.0
   2   1  11  12 180.0   5.0
   1   2   3   4 180.0   5.0
   9   2   3   4   0.0   5.0
   1   2   9   7 180.0   5.0
   1   2   9  10   0.0   5.0
   3   2   9   7   0.0   5.0
   3   2   9  10 180.0   5.0
   2   3   4   5 180.0   5.0
   2   3   4   6   0.0   5.0
   3   4   6   7   0.0   5.0
   5   4   6   7 180.0   5.0
   4   6   7   8 180.0   5.0
   4   6   7   9   0.0   5.0
   6   7   9   2   0.0   5.0
   6   7   9  10 180.0   5.0
   8   7   9   2 180.0   5.0
   8   7   9  10   0.0   5.0
   2   9  10  11   0.0   5.0
   7   9  10  11 180.0   5.0
   9  10  11   1   0.0   5.0
   9  10  11  12 180.0   5.0
   2   1   3   9   0.0   5.0
   4   3   5   6   0.0   5.0
   7   6   8   9   0.0   5.0
   9   2   7  10   0.0   5.0
  11   1  10  12   0.0   5.0