Various symbols have been used to stand for ten and eleven in duodecimal notation; Unicode includes () and (). Using these symbols, a count from zero to twelve in duodecimal reads: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, , , 10. These were implemented in Unicode 8.0 (2015), but most general Unicode fonts in use by current operating systems and browsers have not yet included them. A more common alternative is to use A and B, as in hexadecimal, and this page uses and .