View source for 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/

{| class="wikitable sortable"
! 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 alphabet|Romanova]]
| No
| No
| No
| Yes (c /k/)
| Yes (j /ʃ/)
|-
| ina
| [[Interlingua alphabet|Interlingua]]
| No
| No
| Yes (qu /kw/ or /k/)
| Yes (c /k/)
| No
|-
| ido
| [[Ido alphabet|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 alphabet|Novial]]
| No
| No
| Yes (ch /tʃ/, sh /ʃ/, y /j/)
| Yes (q /k/, x /ks/)
| Yes (j /ʒ/, sh /ʃ/)
|-
| igs
| [[Interglossa alphabet|Interglossa]]
| No
| No
| Yes (ph, th, ch, rh -> /f/, /t/, /k/, /r/.)
| Yes (c /k/, q /k/, x /ks/, z /ts/)
| No
|-
| epo
| [[Esperanto alphabet|Esperanto]]
| No
| Yes (ĉ, ĝ, ĥ, ĵ, ŝ, ŭ)
| No
| Yes (c /ts/)
| No
|-
| -
| [[Mundolinco alphabet|Mundolinco]] [http://lfn.wikia.com/wiki/Mundolinco]
| No
| No
| No
| Yes (c /k/)
| No
|-
| -
| [[Glosa alphabet|Glosa]]
| No
| No
| Yes (sc /ʃ/)
| Yes (q /kw/, x /ks/)
| Yes (c /tʃ/, sc /ʃ/)
|-
| -
| [[Sambahsa alphabet|Sambahsa]][http://sambahsa.pbworks.com/w/page/27811711/Sambahsa%20pronounciation%20in%20English]
| 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 alphabet|Idiom neutral]]
| No
| No
| Yes (sh /ʃ/)
| Yes (y /j/)
| Yes (c /tʃ/, j /ʒ/, sh /ʃ/)
|-
| -
| [[Lingwa de planeta alphabet|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 alphabet|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])
|}