sentences:  Dubno soon became proficient in these branches of Jewish science, and was charged by his master with the revision and publication of his work on the Hebrew accents, "Sha'are Ne'imah" (Frankfort-on-the-Main, 1766).From 1767 to 1772 Dubno lived at Amsterdam, attracted by its rich collections of Hebrew books.On leaving Amsterdam he settled in Berlin, earning a livelihood by teaching.