artefaqs - 11:05 pm on Jun 11, 2010 (gmt 0)
Thanks for helping with this. I appreciate your patience.
There are always exactly three slashes in the URL (well, five if you count the [)...] and they're always in the same place.
The only parts that will vary is the B_C_D area. Sometimes it will be B_C, sometimes B_C___D_E_F, sometimes... who knows.
I think it's OK if it works up to nine underscores. 10 was really just a guesstimate.