From *piti.
*pьjavъka f
singular | dual | plural | |
---|---|---|---|
nominative | *pьjavъka | *pьjavъcě | *pьjavъky |
genitive | *pьjavъky | *pьjavъku | *pьjavъkъ |
dative | *pьjavъcě | *pьjavъkama | *pьjavъkamъ |
accusative | *pьjavъkǫ | *pьjavъcě | *pьjavъky |
instrumental | *pьjavъkojǫ, *pьjavъkǫ** | *pьjavъkama | *pьjavъkami |
locative | *pьjavъcě | *pьjavъku | *pьjavъkasъ, *pьjavъkaxъ* |
vocative | *pьjavъko | *pьjavъcě | *pьjavъky |
* -asъ is the expected Balto-Slavic form but is found only in some Old Czech documents; -axъ is found everywhere else and is formed by analogy with other locative plurals in -xъ.
** The second form occurs in languages that contract early across /j/ (e.g. Czech), while the first form occurs in languages that do not (e.g. Russian).