Old Korean Hangul final consonant jamo made of a doubled nieun (n), used as a syllable-ending sound in historical Hangul.
U+11FEHANGUL JONGSEONG KIYEOK-HIEUHU+11FDHANGUL JONGSEONG KIYEOK-KHIEUKHU+11FCHANGUL JONGSEONG KIYEOK-CHIEUCHU+11FBHANGUL JONGSEONG KIYEOK-PIEUPU+11FAHANGUL JONGSEONG KIYEOK-NIEUNU+11F9HANGUL JONGSEONG YEORINHIEUHU+11F8HANGUL JONGSEONG HIEUH-PIEUPU+11F7HANGUL JONGSEONG HIEUH-MIEUMU+11F6HANGUL JONGSEONG HIEUH-RIEULU+11F5HANGUL JONGSEONG HIEUH-NIEUNU+11F4HANGUL JONGSEONG KAPYEOUNPHIEUPHU+11F3HANGUL JONGSEONG PHIEUPH-PIEUP256 characters in the Hangul Jamo Unicode block, from number 256.