| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at which the [num ord] [noun] | 7 |
|
| 2 | at [pron] the [num ord] [noun] | 7 |
|
| 3 | at [Wh det] the [num ord] [noun] | 7 |
|
| 4 | at which the [num ord] [noun] | 7 |
|
| 5 | at [pron] the [num ord] [noun] | 7 |
|
| 6 | at [pron] the [num ord] [noun sg] | 6 |
|
