U+A975 "ꥵ" Hangul Choseong Ssangsios-Pieup Unicode Character

U+A975 "ꥵ" Hangul Choseong Ssangsios-Pieup is a composite initial consonant cluster used in the Old Hangul writing system, specifically representing a double sound combining elements of the alveolar fricative "Ssangsios" (a tense or fortis "s" sound) and the labial stop "Pieup" (a "p" sound). This character belongs to the Hangul Jamo Extended-A block and was used historically to record Middle and Early Modern Korean phonology, where such complex onset clusters were permissible in syllable structure before they largely disappeared from standard Modern Korean. As an archaic letter, "ꥵ" is primarily of interest to linguists, historians, and typographers working with ancient Korean texts or Hangul script reconstruction.