UTO
| Date | Clue |
|---|---|
| 2014-05-09 | ___-Aztecan |
| 2013-08-22 | ___-Aztecan (language family) |
| 2012-09-18 | ___-Aztecan language |
| 2007-12-30 | ___-Aztecan language |
| 2007-12-15 | ___-Aztecan language |
| 2000-06-22 | ___-Aztecan languages |
| 1999-07-17 | ___-Aztecan |
| 1996-04-21 | ___-Aztecan (language group) |