Connection table for CPZ
  12  13  20
 C
 C
 C
 C
 C
 C
 C
 C
 N
 C
 N
CL
   1   2
   1   6
   2   3
   3   4
   3  12
   4   5
   5   6
   6   7
   7   8
   7  11
   8   9
   9  10
  10  11
   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
   1   2   3  12 180.0   5.0
   2   3   4   5   0.0   5.0
  12   3   4   5 180.0   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
   6   7   8   9 180.0   5.0
  11   7   8   9   0.0   5.0
   6   7  11  10 180.0   5.0
   8   7  11  10   0.0   5.0
   7   8   9  10   0.0   5.0
   8   9  10  11   0.0   5.0
   9  10  11   7   0.0   5.0
   3   2   4  12   0.0   5.0
   6   1   5   7   0.0   5.0
   7   6   8  11   0.0   5.0