Double O (Cyrillic)

"Double O" ⟨Ꚙ ꚙ⟩ is a letter of the Cyrillic script. It is found in some early Old Church Slavonic manuscripts, where it is used in place of ⟨О⟩ in: двое "two"' обо "both"' обанадесять "twelve"' and двоюнадесять "twelve". The Cyrillic "double O" looks similar to the Latin-script double-o ligature: ⟨ꝏ⟩.