Phonology
The script represents three vowels a, i, u and twelve consonants, h, k, l, m, n, p, r, s, t, w, y, z. Syllabograms have the structure V or CV, and more rarely CVCV. *383 ra/i, *439 wa/i and *445 la/i/u show multiple vocalization. Some syllabograms are homophonic, disambiguated with numbers in transliteration (as in cuneiform transliteration), notably, there are many (more than six) syllabograms each for phonemic /sa/ and /ta/.
There is a tendency of rhotacism, replacing intervocalic d with r. Word-final stops and in some cases word-initial a- are elided. Suffixes -iya- and -uwa- may be syncopated to -i-, -u-.
Read more about this topic: Hieroglyphic Luwian