Thai and Lao Braille
Low-tone-class kh, ng, ch, s, th, f are derived from English Braille k, g, st, s, th, f by adding dot 6.Consonants of different tone classes have distinct braille letters; complete homonyms, found in Thai only, are distinguished by prefixes.In Thai, ⠓ h is prefixed to low-class nasal stops and non-plosives ⠻⠀⠠⠽⠀⠝⠀⠍⠀⠗⠀⠇⠀⠺ ng y n m r l w to move them to the high-tone class.All vowels, including the default, are written after the consonant in braille, regardless of their order in print.Numbers are the same as in other braille alphabets, though dot six ⠠ is prefixed to the ⠼ to specify that they're Thai or Lao digits.