I didn't have a problem at all really. There is female/male color coded... the colors are too similar I think, but hey, not my graph. I typically think of the normal order as male/female, but again, not my graph. Maybe they were listing alphabetically? Maybe the person who made it was female, and just chose to look at that first?
To me it seemed pretty straight forward really.
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Sorry about the incredibly long post...
"I enjoyed the meetings, too. It was like having friends." -Luna Lovegood