| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] when [pers pn] | 83 |
|
| 2 | [v-ing] at [noun prp] [pers pn] | 17 |
|
| 3 | [v-ing] [noun prp] when [pers pn] | 11 |
|
| 4 | [v-ing] at [noun prp] when | 8 |
|
