Wiktionary:Isan Romanization

Consonants

 * 1) Obsolete letters
 * 2) Silent as initial consonant
 * 3) Part of a diphthong
 * 4) Final ร without a vowel mark = ɔɔn; Medial รร = a
 * 5) ฤ = รึ (rʉ, rue); ฤๅ = รือ: (rʉʉ, rue); ฦ = ลึ (lʉ, lue); ฦๅ = ลือ: (lʉʉ, lue). However, their pronunciation might change in words.
 * 6) Western loanwords sometimes use initials as alternative finals instead.
 * 7) Finals in parentheses are theorical and they have never occured.

Tone marks (Khon Kaen)

 * 1) Syllable ending in long vowel, diphthong or nasal
 * 2) Syllable ending in a short vowel or plosive


 * Other symbols of undetermined ordering:, , ,
 * Foreign and archaic characters: (alone) ,