| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] their [noun] at [art] | 9 |
|
| 2 | [prep] [verb] their [noun] at [art] | 9 |
|
| 3 | [prep] [verb] their [noun] at the | 7 |
|
| 4 | [prep] [verb] their [noun sg] at [art] | 6 |
|
