I finally able to answer L3 challenge. however I kinda hold back little over controversy of what was the best understanding over the hints given.
hints --> "surrounded by <b>EXACTLY</b> three big bodyguards on each of its sides"
possibility:
AAAgCCCmAAAgCCCmAAAgCCCm - this is correct, no question asked
AAAgCCCAAAgCCCAAAgCCCm - somehow this also correct since the small letter still resides 3 cap letter left and right