| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] at the [adj] | 184 |
|
| 2 | [prep] [v-ing] [prep] the first | 73 |
|
| 3 | [prep] [v-ing] at [art] first | 5 |
|
| 4 | [prep] [verb] at the first | 5 |
|
