This article uses examples from the Littoral dialect group that have the phoneme/ grapheme v in place of etymological b in order to determine that sporadic cases of the multidirectional substitution v ⇄ b (e.g., Littoral vedríca ‘hip’ ← *bedrica : Prekmurje grìba ‘mane’ ← gríva), which can be observed quite broadly throughout Slovenian territory, are the remnants of what was probably already the Proto-Slavic (dialect) operative free alternation ⇄ ƀ
