| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] a [noun] | 49708 |
|
| 2 | on a [noun] | 758 |
|
| 3 | [v-ing] on a | 263 |
|
| 4 | [v-ing] on [noun] | 205 |
|
