Here are some codes/passwords you can use to receive items:
Pen: BBCA CCCA (15,000 GP)
Steak: ACAB ACAC (1,400 GP)
Clone: BAAB ACBA (14,000 GP)
Honey: CCBA AABB (7,000 GP)
CD3: CAAA BACB (FREE)
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Honey: CCBA AABB (7,000 GP)
CD3: CAAA BACB (FREE)