| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [v-ing] [art] | 20233 |
|
| 2 | [subord] [v-ing] [art] | 7234 |
|
| 3 | while [verb] [art] | 1390 |
|
| 4 | while [v-ing] [art] | 1381 |
|
