| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] when [pers pn] | 1651 |
|
| 2 | at [pron] [conj] [pers pn] | 767 |
|
| 3 | at [pron] [subord] [pers pn] | 460 |
|
| 4 | at [pron] when [pron] | 69 |
|
| 5 | at [pron] when [pers pn] | 65 |
|
