| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] [pron] at | 299 |
|
| 2 | [v-ing] [prep] [pron] a | 189 |
|
| 3 | [prep] [pron] at a | 152 |
|
| 4 | [v-ing] [pron] at a | 62 |
|
