Cyrillic Extended-A is a Unicode block containing Cyrillic combining characters used in Old Church Slavonic texts. Wikipedia
combining cyrillic letter be
U+2DE0
combining cyrillic letter ve
U+2DE1
combining cyrillic letter ghe
U+2DE2
combining cyrillic letter de
U+2DE3
combining cyrillic letter zhe
U+2DE4
combining cyrillic letter ze
U+2DE5
combining cyrillic letter ka
U+2DE6
combining cyrillic letter el
U+2DE7
combining cyrillic letter em
U+2DE8
combining cyrillic letter en
U+2DE9
combining cyrillic letter o
U+2DEA
combining cyrillic letter pe
U+2DEB
combining cyrillic letter er
U+2DEC
combining cyrillic letter es
U+2DED
combining cyrillic letter te
U+2DEE
combining cyrillic letter ha
U+2DEF
combining cyrillic letter tse
U+2DF0
combining cyrillic letter che
U+2DF1
combining cyrillic letter sha
U+2DF2
combining cyrillic letter shcha
U+2DF3
combining cyrillic letter fita
U+2DF4
combining cyrillic letter es-te
U+2DF5
combining cyrillic letter a
U+2DF6
combining cyrillic letter ie
U+2DF7
combining cyrillic letter djerv
U+2DF8
combining cyrillic letter monograph uk
U+2DF9
combining cyrillic letter yat
U+2DFA
combining cyrillic letter yu
U+2DFB
combining cyrillic letter iotified a
U+2DFC
combining cyrillic letter little yus
U+2DFD