| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv] [art] | 15764 |
|
| 2 | [adv] when [art] | 2894 |
|
| 3 | [v-ing] [adv] when | 435 |
|
| 4 | [v-ing] when [art] | 203 |
|
