Geryow Kernowek spellys in Abecedary Kesgwlasek an Sonieth
If you are uncertain of the sound represented by any symbol of the International Phonetic Alphabet, there is more information at
https://en.wikipedia.org/wiki/International_Phonetic_Alphabet
Be careful: not all devices display IPA symbols correctly
In particular, some devices such as i-Phones cause the near-close front unrounded vowel (IPA Number 319, Unicode U+026A) to display without the horizontal bars at top and bottom that properly belong to it.
Here are spellings in the International Phonetic Alphabet for all the Cornish words in Cara Kernowek Book One.
Here is a reference guide to the effect of the Prosodic Shift on Cornish pure vowel sounds.