Modifier Tone Letters characters supported by the Liberation Serif font

Character	Image
MODIFIER LETTER DOT VERTICAL BAR (U+A717)
MODIFIER LETTER DOT SLASH (U+A718)
MODIFIER LETTER DOT HORIZONTAL BAR (U+A719)
MODIFIER LETTER LOWER RIGHT CORNER ANGLE (U+A71A)
MODIFIER LETTER RAISED UP ARROW (U+A71B)
MODIFIER LETTER RAISED DOWN ARROW (U+A71C)
MODIFIER LETTER RAISED EXCLAMATION MARK (U+A71D)
MODIFIER LETTER RAISED INVERTED EXCLAMATION MARK (U+A71E)
MODIFIER LETTER LOW INVERTED EXCLAMATION MARK (U+A71F)

Count: 9

Character
MODIFIER LETTER CHINESE TONE YIN PING (U+A700)
MODIFIER LETTER CHINESE TONE YANG PING (U+A701)
MODIFIER LETTER CHINESE TONE YIN SHANG (U+A702)
MODIFIER LETTER CHINESE TONE YANG SHANG (U+A703)
MODIFIER LETTER CHINESE TONE YIN QU (U+A704)
MODIFIER LETTER CHINESE TONE YANG QU (U+A705)
MODIFIER LETTER CHINESE TONE YIN RU (U+A706)
MODIFIER LETTER CHINESE TONE YANG RU (U+A707)
MODIFIER LETTER EXTRA-HIGH DOTTED TONE BAR (U+A708)
MODIFIER LETTER HIGH DOTTED TONE BAR (U+A709)
MODIFIER LETTER MID DOTTED TONE BAR (U+A70A)
MODIFIER LETTER LOW DOTTED TONE BAR (U+A70B)
MODIFIER LETTER EXTRA-LOW DOTTED TONE BAR (U+A70C)
MODIFIER LETTER EXTRA-HIGH DOTTED LEFT-STEM TONE BAR (U+A70D)
MODIFIER LETTER HIGH DOTTED LEFT-STEM TONE BAR (U+A70E)
MODIFIER LETTER MID DOTTED LEFT-STEM TONE BAR (U+A70F)
MODIFIER LETTER LOW DOTTED LEFT-STEM TONE BAR (U+A710)
MODIFIER LETTER EXTRA-LOW DOTTED LEFT-STEM TONE BAR (U+A711)
MODIFIER LETTER EXTRA-HIGH LEFT-STEM TONE BAR (U+A712)
MODIFIER LETTER HIGH LEFT-STEM TONE BAR (U+A713)
MODIFIER LETTER MID LEFT-STEM TONE BAR (U+A714)
MODIFIER LETTER LOW LEFT-STEM TONE BAR (U+A715)
MODIFIER LETTER EXTRA-LOW LEFT-STEM TONE BAR (U+A716)

Count: 23