| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] at | 8429 |
|
| 2 | while [verb] [prep] | 1312 |
|
| 3 | while [verb] [prep] | 1312 |
|
| 4 | while [verb] at | 112 |
|
