| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | work could be [vb pp] [prep] | 27 |
|
| 2 | work could be [vb pp] [prep] | 27 |
|
| 3 | work could [be] [vb pp] [prep] | 27 |
|
| 4 | work could [be] done [prep] | 7 |
|
| 5 | work could [be] [vb pp] by | 6 |
|
