Disclaimer: Wall of text from obscure player in bad English, skip it or read it at Your own discretion:
Since Ive received lots of messages (kind ones and haters also) maybe I should say something. I made a wall of text but redacted for a short version.
I may be wrong (I am only human and not alien elf with , sorry!!!) but I strongly believe that this "riddle" can
only be solved in solo mode or
one wing group with single commander/coordinator in
single instance to speed things up). I do not see how it can be solved in the open (too much
noise from false movements of the relics). From the city layout I came to conclusion that relics have additional function beside decoding obelisks. They are placed at exact positions (also obelisks) with hard-coded reasons. From immersion point of view they are "relays of the underground power source" on the "crossroads" of "power grid/touching lines" devised from algorithm for the layout. Relics from group G are perfect match for the group A for this layout theory. Bad graphical example follows, I am no-good to scale and place overlayed pictures. Maybe someone will understand what I am trying to say here:
http://i64.tinypic.com/2ynrlnb.jpg
This is Koch snowflake, easier (?) to visualize then Sierpinski triangles.
Broken walls are markers for the biggest star (thick green lines). If there would be 3 broken walls , it would be too obvious to reveal layout. Anyway...
From
programming point of view I believe that relics are "
flagged". Either they are flagged with the position on the map (coords x,y,-x,-y) from some starting point, or they carry a flag to what obelisk group (not single obelisk) they belong. There is no reasons why this "group" should correlate with ours, but to make coding easier I suspect 5 groups max. It would be counter-productive for FD to burn players with brute-force with millions of possible combinations (trying all with all). Introducing "group flag" carries a risk for major bug for unlocking obelisks sub-groups, so how to proceed?
If I would be FD dev, I would go with the coords (x,y) from fixed point. IMHO it could be the center of city, above mentioned "observation" point, around center of the compass from CMDR SpaceGoblin. So the code can just compare distance between relic and the obelisk. To cut the story short, do not pick relics near the "group" that You are trying to unlock. Those should be left on their original places, and others should be picked up far away (left-right, high-low) from that obelisk group that is under unlocking. I also have a personal reason (irrelevant for You) to believe that there are 4 groups, that city is divided in X with the above mentioned center point. (G-A, E-F-H-D, C-B).
Thank You for Your time.