| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while we [be] [verb] for | 7 |
|
| 2 | while we be [verb] for | 7 |
|
| 3 | while we [be] [v-ing] for | 7 |
|
| 4 | while we [be] wait for | 6 |
|
| 5 | while we [be] waiting for | 6 |
|
