Based on the reconstruction modelled by Georg Holzer, the author discusses three phenomena of Proto-Slavic that should not exist according to earlier sound changes: 1) Disyllabic masculine o-stems stressed on their first syllable, as they contradict the “Second Deaccentuation”, 2) o-stem dative singular forms in -uw, as this would yield -ū and then OCS -y instead of attested -u, 3) Word forms accented on a short final vowel, as this stress pattern had been eliminated by Olander’s Law. Where possible, the author seeks to harmonize these phenomena with Holzer’s reconstruction, or to provide data for further research.
