SEEPIN
| Date | Clue |
|---|---|
| 2017-09-04 | Permeate |
| 2017-02-04 | Gradually become noticeable |
| 2012-12-14 | Percolate |
| 2011-12-20 | Enter via osmosis |
| 2010-06-24 | Come through slowly |
| 2006-11-15 | Penetrate slowly |
| 2005-01-28 | Enter drop by drop |
| 2004-09-24 | Enter via cracks |
| 1998-05-22 | Enter through the cracks |
| 1994-12-30 | Enter gradually |