U+A651 "ꙑ" Cyrillic Small Letter Yeru with Back Yer Unicode Character

U+A651 "ꙑ" Cyrillic Small Letter Yeru with Back Yer is a historical glyph used in certain early Cyrillic manuscripts, specifically representing a variant of the letter Yeru (Ї) that combines a front yer (ь) with a back yer (ъ) in a single ligature or digraph form. This character was employed in Old East Slavic and Church Slavonic texts to denote a distinct vowel sound, often a high, lax central or back vowel, and it appears in the Cyrillic Extended-B block of Unicode, which was added to support scholarly transcription and digital preservation of medieval Slavic writing. Its inclusion aids linguists and historians in accurately reproducing original orthography without resorting to approximate substitutions.