| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a | 27354 |
|
| 2 | [conj] [prep] a | 18373 |
|
| 3 | [v-ing] [conj] [prep] | 1658 |
|
| 4 | [v-ing] [conj] a | 1056 |
|
