[ gdw]
It is not clear whether the final -e in a form like pione should be considered tonic or not. Whereas Continental French seems to have favoured an unstressed -oine ending, in English, the final syllable always seems to have been tonic. Anglo-Norman may have gone for either, with the result that forms like peoyne, pione, pioine, pioyne, pyoingne, pyoine, pyoyne and piaine are equally justifiable with or without an accent on the final -e.