En réponse à Mark J. Reed : >Eehhh . . . maybe. But then what is the difference between [c] and [t_j]? [c] is palatal all along, even when you begin to pronounce the sound. The whole phone is at *one* PoA. With [t_j], you begin dental or alveolar (whatever your own kind of [t] is) and end up palatal. During the phonation of [t_j], you *change* the PoA. That's why palatalisation is a diacritic in IPA: you can apply it to any consonant, except palatal ones ;)) (and indeed, languages like Irish Gaelic and Russian basically double their consonant sets by adding palatalised consonants). On the other hand, palatal consonants are specific consonants at a single well-defined PoA. Christophe Grandsire. http://rainbow.conlang.free.fr You need a straight mind to invent a twisted conlang.