OPERATOR
| Date | Clue |
|---|---|
| 2015-09-18 | Wheeler-dealer |
| 2012-04-24 | Zero personality? |
| 2012-01-15 | Person who's a zero? |
| 2008-07-10 | Zero personality? |
| 2005-09-11 | One whose working days are numbered |
| 2004-10-29 | Number finder |
| 2002-07-11 | Wheeler-dealer |
| 1998-08-01 | Numbers person |
| 1998-04-11 | Numbers person? |
| 1997-10-08 | Smooth worker |
| 1995-03-21 | O, on a telephone |