| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [to-vb] a | 4584 |
|
| 2 | [v-ing] at a | 1472 |
|
| 3 | [to-vb] at a | 619 |
|
| 4 | [v-ing] [to-vb] at | 551 |
|
