| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while [pers pn] were [verb] [prep] the | 16 |
|
| 2 | while [pers pn] were [v-ing] [prep] the | 16 |
|
| 3 | while they were [verb] [prep] the | 9 |
|
| 4 | while we were [verb] [prep] the | 6 |
|
