[Lao Details]

Additional validation rules for Lao

The following code points may not appear as the first character in a
label:

  U+0EB1 # LAO VOWEL SIGN MAI KAN
  U+0EB4 # LAO VOWEL SIGN I
  U+0EB5 # LAO VOWEL SIGN II
  U+0EB6 # LAO VOWEL SIGN Y
  U+0EB7 # LAO VOWEL SIGN YY
  U+0EB8 # LAO VOWEL SIGN U
  U+0EB9 # LAO VOWEL SIGN UU
  U+0EBB # LAO VOWEL SIGN MAI KON
  U+0EBC # LAO SEMIVOWEL SIGN LO
  U+0EC6 # LAO KO LA
  U+0EC8 # LAO TONE MAI EK
  U+0EC9 # LAO TONE MAI THO
  U+0ECD # LAO NIGGAHITA