Bi-equivalent planar graphs data files

The archive file contains files describing every bi-equivalent planar graph.
Each folder of the type LM contains the graph of valencies L and M.
Each sub-folder in these folder correspond to 1 graph.
Their content is:
- f.par : the PGC for the graph
- a txt file: file describing the connectivity of the graph (see below for the format).
- a svg file: vector graphic file for the graph.

Syntax of the txt file:
Line 1 : the number of nodes for the graph
Line 2 : the nodes for the outside face (usually "0 1 2 P-1")
Following lines except last 2 lines: "n1 n2"  : the indices of 2 nodes linked together.
Line -2 from the end:  "N0 n1 n2 ... nn" : the list of nodes of the 1st type.
Last line: "N1 n1 n2 ... nn", the list of nodes of the 2nd type.