OGIVE
| Date | Clue |
|---|---|
| 2020-06-14 | Pointed arch |
| 2013-08-16 | Diagonal rib of a vault |
| 2004-10-06 | Pointed arch |
| 1999-05-22 | Pointed arch |
| 1999-04-29 | Pointed arch |
| 1999-04-10 | Pointed arch |
| 1996-02-19 | Architectural arch |
| 1995-10-28 | Pointed arch |
| 1995-07-12 | Pointed arch |
| 1995-04-08 | Pointed arch |
| 1994-10-31 | Architectural arch |