All letters are lowercase. Some letters represent different sounds.

c - ch (as in chat)

S (capital s) - sh (as in show)

Z (capital z) - jz 

T (capital t) - th (as in think)

D (capital d) - dh (as in the)

Vowels:

a (as in app), A (as in wall), e (as in egg), E (as in ape), i (as in fit), I (as in eel), o (as in on), O (as in or), u (as in fun), U (as in room), y (as in the second part of apple)