Uropi alphabet

In some environments it is impossible to write the letter ʒ, while all other letters of ISO 646 are available. Unused letters in Uropi are q, x, y. The desired sound /ʒ/ is

• voiced palato-alveolar sibilant @ https://en.wikipedia.org/wiki/Voiced_palato-alveolar_sibilant
• voiced postalveolar fricative @ https://www.internationalphoneticassociation.org/content/ipa-pulmonic-consonants

1. q - in IPA is /q/ voiceless uvular stop (Wikipedia) or voiceless uvular plosive (IPA website)
2. x - has the value /ks/ in several alphabets, which is voiceless, in IPA it is /x/ voiceless velar fricative
3. y - has the value /j/ in several alphabets. /j/ is voiced palatal approximant

Some IALs use j = /ʒ/ and y = /j/. Choosing j = /j/ and y = /ʒ/ increases the compliance with IPA without changing any other letter.