| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] they | 4045 |
|
| 2 | [prep] [v-ing] at | 2878 |
|
| 3 | [prep] they at | 548 |
|
| 4 | [v-ing] they at | 167 |
|
