Veyy° is a (purely phonetic) diæretic form of vy°, for which viy° and veyy° are used indiscriminately. There is as little difference between viy° and veyy° as between vi° and ve° in those cases where (double, as it were) abstract nouns are formed from words with ve° (vepullatā, vemattatā, etc.), which shows that ve° was simply felt as vi°. Cf. the use of e for i (especially before y) in cases like alabbhaneyya > °iya; addhaneyya > °iya; pesuṇeyya > °iya, without any difference in meaning.