

Here is pronaunciation of some letters:
Right side/downward strokes
B beith (*betwi-s)
L luis [l] (*lubsti-)
F fearn [w] (*wernā)
S saille [s] (*salik-s)
N nuin [n]
Left side/upward strokes
H úath [j] (*osato-)
D duir [d] (*darek-s)
T tinne [t]
C coll [k] (*koslas)
Q ceirt [kʷ] (*kʷer[x]tā)
Across/pendicular strokes
M muin [m]
G gort [ɡ] (*gorto-s)
NG gétal [ɡʷ] (*gʷēdtlo-)
Z straif [sw] or [ts]?
R ruis [r] (*rudsti-)
notches (vowels)
A ailm [a]
O onn [o] (*osno-)
U úr
E edad [e]
I idad