ATNOS
| Date | Clue |
|---|---|
| 2017-04-02 | Periodic table figs. |
| 2016-01-27 | 5 for B and 6 for C |
| 2012-06-02 | Periodic law figs. |
| 2009-02-27 | B and O figures: Abbr. |
| 2006-04-27 | 7 for N, 8 for O, etc. |
| Date | Clue |
|---|---|
| 2017-04-02 | Periodic table figs. |
| 2016-01-27 | 5 for B and 6 for C |
| 2012-06-02 | Periodic law figs. |
| 2009-02-27 | B and O figures: Abbr. |
| 2006-04-27 | 7 for N, 8 for O, etc. |