Kana Extended-B characters supported by the Dialog.plain font

Character	Image
KATAKANA LETTER MINNAN TONE-2 (U+1AFF0)
KATAKANA LETTER MINNAN TONE-3 (U+1AFF1)
KATAKANA LETTER MINNAN TONE-4 (U+1AFF2)
KATAKANA LETTER MINNAN TONE-5 (U+1AFF3)
KATAKANA LETTER MINNAN TONE-7 (U+1AFF5)
KATAKANA LETTER MINNAN TONE-8 (U+1AFF6)
KATAKANA LETTER MINNAN NASALIZED TONE-1 (U+1AFF7)
KATAKANA LETTER MINNAN NASALIZED TONE-2 (U+1AFF8)
KATAKANA LETTER MINNAN NASALIZED TONE-3 (U+1AFF9)
KATAKANA LETTER MINNAN NASALIZED TONE-4 (U+1AFFA)
KATAKANA LETTER MINNAN NASALIZED TONE-5 (U+1AFFB)
KATAKANA LETTER MINNAN NASALIZED TONE-7 (U+1AFFD)
KATAKANA LETTER MINNAN NASALIZED TONE-8 (U+1AFFE)

Count: 13

Character

Count: 0