| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] on a | 2571 |
|
| 2 | [v-ing] [pers pn] a | 1688 |
|
| 3 | [pers pn] on a | 1113 |
|
| 4 | [v-ing] [pers pn] on | 985 |
|
