HCL
| Date | Clue |
|---|---|
| 2008-05-11 | Corrosive chemical, to a chemist |
| 2008-01-24 | Stomach acid, to a chemist |
| 2006-01-15 | Corrosive chemical, to a chemist |
| 2002-09-25 | Stomach acid, symbolically |
| 2001-12-16 | Colorless gas with a pungent odor, for short |
| Date | Clue |
|---|---|
| 2008-05-11 | Corrosive chemical, to a chemist |
| 2008-01-24 | Stomach acid, to a chemist |
| 2006-01-15 | Corrosive chemical, to a chemist |
| 2002-09-25 | Stomach acid, symbolically |
| 2001-12-16 | Colorless gas with a pungent odor, for short |