Alphabet stepping pattern across three positions: continue JAK, KBL, LCM, MDN, ____ by noting +1 shifts in all three letter positions to produce the next code.

Every position advances by +1 letter from term to term.

• First letters: J → K → L → M → N (+1 each).
• Second letters: A → B → C → D → E (+1 each).
• Third letters: K → L → M → N → O (+1 each).