The Barddas of Iolo Morganwg, Vol. I., ed. by J. Williams Ab Ithel, [1862], at sacred-texts.com
It is very remarkable that the Druidical secrets consisted in the use of the letters
or
; anciently
, of the twelve letters *,
;or thus
, A. E. I. O, and where
was made, it was cut fully across the Coelbren; or thus,
, which were five vowels. With them in the second age there were seven strongly vocal letters, namely
or
. Instead of M there were two
.'s together, as
; and instead of P,
upside down, thus
; and instead of Mh, two
's, thus,
; and instead of F,
, and an aspirate thus
, and subsequently, thus
; and instead of
,
fully across, thus,
. And
A. E. I. O; and then
A. E. I. O. W. Some persons maintain that there were only three vowels from the beginning, namely,
. O. I. W; after that,
; in other books,
and
making
E.
77:* This English sentence is evidently Iolo Morganwg's own observation.