Where is Ostrov?

Ostrov - Gai Smolenskie Ostrov - Verben Ostrov - Solonev Ostrov - Sverchuv Ostrov - Pokrovcy Ostrov - Novuyu Mitnicu Ostrov - Zheleznodorozhnuyu Stanciyu Gorohov Ostrov - Stoki Ostrov - Dibrovku Ostrov - Maluyu Plavuchu Ostrov - Myslini Ostrov - Krasnoe Ostrov - Peremilovku Ostrov - Ozeryany Ostrov - Kleschihu Ostrov - Blischivody Ostrov - Novyi Mosyr Ostrov - Dobroe Ostrov - Zheleznodorozhnuyu Stanciyu Chervonograd Ostrov - Zheleznodorozhnuyu Stanciyu Radivilov Ostrov - Noviki Ostrov - Panchischiny Ostrov - Poberezhe Ostrov - Malyi Obzyr