EXTS
| Date | Clue |
|---|---|
| 2025-06-05 | Telephone no. add-ons |
| 2021-07-22 | Tel. number add-ons |
| 2019-03-09 | Personal organizer nos. |
| 2018-03-18 | They're added on bus. lines |
| 2017-01-29 | Tel. no. add-ons |
| 2016-07-26 | Tel. no. add-ons |
| 2013-03-24 | Office nos. |
| 2011-05-02 | Parts of office tel. nos. |
| 2011-04-23 | Company lines?: Abbr. |
| 2001-03-04 | Bus. phone components |
| 1997-06-15 | Office phone nos. |