| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a | 310452 |
|
| 2 | [v-ing] [noun] [prep] | 54848 |
|
| 3 | [v-ing] [prep] a | 27362 |
|
| 4 | [v-ing] [noun] a | 619 |
|
