| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [conj] [verb] [art] | 4233 |
|
| 2 | [to-vb] [subord] [verb] [art] | 125 |
|
| 3 | [verb] while [verb] [art] | 110 |
|
| 4 | [to-vb] while [verb] [art] | 8 |
|
