| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] to [art] | 21565 |
|
| 2 | while [v-ing] [art] | 1381 |
|
| 3 | while [v-ing] to | 115 |
|
| 4 | while to [art] | 20 |
|
