* Add Characters
  - MODIFIER LETTER YIN DEPARTING TONE MARK (`U+02EA`);
  - MODIFIER LETTER YANG DEPARTING TONE MARK (`U+02EB`);
  - MODIFIER LETTER DOUBLE APOSTROPHE (`U+02EE`);
  - MODIFIER LETTER MIDDLE GRAVE ACCENT (`U+02F4`);
  - MODIFIER LETTER MIDDLE DOUBLE GRAVE ACCENT (`U+02F5`);
  - MODIFIER LETTER MIDDLE DOUBLE ACUTE ACCENT (`U+02F6`);
  - MODIFIER LETTER RAISED COLON (`U+02F8`);
  - MODIFIER LETTER BEGIN HIGH TONE (`U+02F9`);
  - MODIFIER LETTER END HIGH TONE (`U+02FA`);
  - MODIFIER LETTER BEGIN LOW TONE (`U+02FB`);
  - MODIFIER LETTER END LOW TONE (`U+02FC`);
  - MODIFIER LETTER SHELF (`U+02FD`);
  - MODIFIER LETTER OPEN SHELF (`U+02FE`);
  - MODIFIER LETTER LOW LEFT ARROW (`U+02FF`);
  - COMBINING LEFT ARROW BELOW (`U+20EE`);
  - COMBINING RIGHT ARROW BELOW (`U+20EF`);