DECI
| Date | Clue |
|---|---|
| 2025-04-13 | Prefix with bel |
| 2023-10-17 | Lead-in to meter |
| 2020-11-29 | Metric prefix |
| 2018-09-14 | Liter lead-in |
| 2018-04-01 | Prefix with liter |
| 2015-11-26 | Numerical prefix |
| 2015-07-15 | Prefix with liter |
| 2015-04-18 | Liter lead-in |
| 2014-11-12 | Numerical prefix |
| 2013-07-07 | Numerical prefix |
| 2012-09-23 | Prefix with bel |
| 2012-07-25 | Metric system prefix |
| 2012-02-14 | Prefix with bel |
| 2011-09-17 | Numerical prefix |
| 2011-07-26 | Tenth: Prefix |
| 2010-02-02 | Tenth: Prefix |
| 2009-09-27 | Numerical prefix |
| 2009-04-27 | Tenth: Prefix |
| 2009-02-11 | Prefix with meter |
| 2007-08-13 | Tenth: Prefix |
| 2006-05-09 | Metric prefix |
| 2003-11-23 | Prefix with bel |
| 2003-07-29 | One-tenth: Prefix |
| 2002-12-18 | Metric prefix |
| 1998-10-29 | Metric prefix |
| 1998-04-28 | Prefix with liter |
| 1996-02-03 | Prefix with liter |
| 1995-11-07 | Prefix with meter or bel |
| 1995-10-22 | Metric prefix |
| 1995-07-14 | Numerical prefix |
| 1994-10-25 | Metric prefix |