| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at which [noun] | 816 |
|
| 2 | at [pron] point | 94 |
|
| 3 | at [Wh det] point | 84 |
|
| 4 | [prep] which point | 28 |
|
| 5 | [prep] which point | 28 |
|
| 6 | at which point | 20 |
|
| 7 | at which point | 20 |
|
