Balkan Slavic (Vranishte). Mid vowel raising in unstressed syllable: Present, 1

маћија / maćija; некуј=кóн’ / nekuj=kón’
nekuj=kón’
stepmother(F)-SG
nekuj=kón’
some=horse(M).SG
stepmother; a horse (in both cases lexicalized, under the influence of phonetic environment)
Type: Naturalistic spoken
Source: Mladenović 2001: 96, 103