International Auxiliary Language alphabet
Consonants
Sounds represented by an ISO 646 letter in IPA but rarely used in IAL
- /c/
- /q/
- /y/
Consonants having no ISO 646 representation in IPA
Some consonants found in several IALs are not represented by an ISO 646 letter in IPA. Three have a single letter in IPA, one of these has an widespread alternative
- /ʃ/ (U+0283, IPA 134)
- /ʒ/ (U+0292, IPA 135)
- /ɡ/ (U+0261, IPA 110) = g (U+0067)
Four are affricates, and have two letters in IPA, they can often be written decomposed:
- /t͡s/ = /ts/
- /t͡ʃ/ = /tʃ/; Note: Polish distinguishes between them
- /d͡z/ = /dz/; Note: Polish distinguishes between them
- /d͡ʒ/ = /dʒ/
That leaves two characters that are not in ISO 646: ʃ, ʒ.
They can be encoded with c, q, y.
ILA-2015 uses:
- c = /ʃ/
- y = /ʒ/
| ISO 639-3 code | Alphabet name | Non ISO 646 letters | Diacritics | Multigraphs | Sound, which in IPA is ISO 646, is described by different letter | Letters existing in IPA but having a different meaning |
|---|---|---|---|---|---|---|
| - | ILA-2016 | No | No | No | No | Yes (c /ʃ/, q /ʒ/) |
| lfn | Lingua Franca Nova | No | No | No | Yes (c /k/) | Yes (j /ʒ/, x /ʃ/) |
| rmv | Romanova | No | No | No | Yes (c /k/) | Yes (j /ʃ/) |
| ina | Interlingua | No | No | Yes (qu /kw/ or /k/) | Yes (c /k/) | No |
| ido | Ido | No | No | Yes (ch /tʃ/, qu /kw/, sh /ʃ/) | Yes (c /ts/, q /k/, x /ks/ or /ɡz/, y /j/) | Yes (j /ʒ/, sh /ʃ/) |
| nov | Novial | No | No | Yes (ch /tʃ/, sh /ʃ/, y /j/) | Yes (q /k/, x /ks/) | Yes (j /ʒ/, sh /ʃ/) |
| igs | Interglossa | No | No | Yes (ph, th, ch, rh -> /f/, /t/, /k/, /r/.) | Yes (c /k/, q /k/, x /ks/, z /ts/) | No |
| epo | Esperanto | No | Yes (ĉ, ĝ, ĥ, ĵ, ŝ, ŭ) | No | Yes (c /ts/) | No |
| - | Mundolinco [1] | No | No | No | Yes (c /k/) | No |
| - | Glosa | No | No | Yes (sc /ʃ/) | Yes (q /kw/, x /ks/) | Yes (c /tʃ/, sc /ʃ/) |
| - | Sambahsa[2] | No | No | Yes (ch /tʃ/, sh /ʃ/, and more) | Yes (q /x/, and more?) | Yes (j /ʒ/, ch /tʃ/, sh /ʃ/, and more?) |
| - | Idiom neutral | No | No | Yes (sh /ʃ/) | Yes (y /j/) | Yes (c /tʃ/, j /ʒ/, sh /ʃ/) |
| - | Lingwa de planeta | No | No | Yes (ch /tʃ/, sh /ʃ/) | Yes (x /gs/, j /dʒ/, z /dz/) | Yes (c in ch /tʃ/, j /dʒ/, z /dz/) |
| - | Interslavic | No | Yes (č /tʃ/, ń /nj ~ nʲ ~ ɲ/, š /ʃ/, ž /ʒ/ ) | dž, but similar to or same as d+ž | Yes (c /ts/, y /i ~ ɪ ~ ɨ/) | Yes (č /tʃ/, š /ʃ/, ž /ʒ/) |
| - | Uropi | Yes (ʒ /ʒ/) | No | No | No | Yes (c [ʃ]) |