| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while work [prep] | 115 |
|
| 2 | while work [prep] | 115 |
|
| 3 | while [verb] at | 112 |
|
| 4 | [conj] work at | 106 |
|
| 5 | while work at | 17 |
|
