Here is the alphabet system for the Graqhonian language in the Prime Sorcerers series.

Phonemes

Vowels
A - [ɑː]
E - [ɛ]
I - [iː]
O - [ɔː]
U - [uː]
Y - [ɪ]

Diphthongs
AE - [ɛɪ]
AO - [aʊ]
EI - [aɪ]
EO - [ʌː]
EU - [ə]
IA - [jɑː]
IE - [jɛ]
IO - [jɔː]
IU - [juː]
OI - [ɔɪ]
OU - [ʊ]
UA - [wɑː]
UE - [wɛ]
UI - [wiː]
UO - [wɔː]

Consonants
B - [b]
C - [ts]
Ch - [ʧ]
D - [d]
Dh- [ð]
Dz - [dz]
F - [f]
G - [g]
H - [h]
Jh - [ʤ]
Kh - [k]
L - [l]
Lh - [ʎ]
M - [m]
N - [n]
Ng - [ŋ] (ending) or [ɲ] (initial)
P - [p]
Qh - [q]
R - [r]
Rh - [ɾ]
S - [s]
Sh - [ʃ]
T - [t]
Th - [θ]
V - [v]
Wh - [w]
X - [kɕ] (final) or [ɕ] (initial)
Y - [j]
Z - [z]
Zh - [ʒ]

' - [ʔ] apostrophe used as a double consonant for the following letters:
A, B, Ch, D, Dh, E, F, G, H, I, Jh, Kh, M, N, O, P, Qh, S, Sh, T, Th, U, V, X, Z, and Zh