| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] [art] | 118164 |
|
| 2 | when [v-ing] [art] | 1807 |
|
| 3 | when [v-ing] [prep] | 1529 |
|
| 4 | when [prep] [art] | 333 |
|
