< form < relation (abstract relation)

• 11830(hole, entrance, room) ← 11840(seam, stitch) → 11850(bunch, stairs)

< straight, sharp, flat < relation (abstract relation)

• 31800(straight, sharp, flat) ← 31840 → 31910(many, enough, little)
• ㄱ ㄴ ㄷ ㄹ ㅁ ㅂ ㅅ ㅇ ㅈ ㅊ ㅋ ㅌ ㅍ ㅎ
• a b c d e f g h i j k l m n o p q r s t u v w x y z