Comment by ks2048

The Unicode names of these 31 chars,

  LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON

  LATIN CAPITAL LETTER {_} WITH SMALL LETTER {_}
    L,J
    N,J
    D,Z

  GREEK CAPITAL LETTER {ALPHA,ETA,OMEGA} WITH PROSGEGRAMMENI

  GREEK CAPITAL LETTER {ALPHA,ETA,OMEGA} WITH {PSILI,DASIA} AND {_}
    PROSGEGRAMMENI
    VARIA AND PROSGEGRAMMENI
    OXIA AND PROSGEGRAMMENI
    PERISPOMENI AND PROSGEGRAMMENI