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| Oka | |||
| |||
| KIRA | |||
| Abrotce | 1500 km- | ||
| Kuksaxo | 245 000 km² | ||
| Bost | Volga | ||
| Celack | 1270 m³/v- | ||
| SALT | |||
| Klita | Briaxo ke Taltefa Rossia ( 226 m-) | ||
| Artexo | Volga (kuksa) | ||
| Kovoapa | Klyazma, Mokca, Moskva, Ugra, Upa, Pronya, Tyoca | ||
| TAWAVO | |||
| Patecta |  Rossia
| ||
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Liwot va salt ke Oka kuksa
Oka ( rossiavon Ока ) tir rossiafa kuksa, ronefa kovoapa ke Volga bost.
Va Oryol winka azu Tula azu Kaluga azu Moskva azu Ryazan azu Vladimir azu Nijni Novgorod winka koonir.
Nelkafa widava tigisa kene Oka kuksa tid Oryol az Kaluga az Kolomna az Ryazan az Nijni Novgorod.
Inafe abrotce tir vas 1500 km- isen kuksaxo tir vas 245 000 km².