| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a | 27362 |
|
| 2 | [noun prp] [prep] a | 13335 |
|
| 3 | [noun prp] [v-ing] [prep] | 3036 |
|
| 4 | [noun prp] [v-ing] a | 918 |
|
