| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [vb pp] by [adv] [adj] | 57 |
|
| 2 | [vb mod] [be] [vb pp] by [adv] [adj] | 57 |
|
| 3 | could [be] [vb pp] [prep] [adv] [adj] | 36 |
|
| 4 | could [be] [vb pp] [prep] [adv] [adj] | 36 |
|
| 5 | could [be] [vb pp] by [adv] [adj] | 20 |
|
| 6 | could [be] [vb pp] by [adv] [adj] | 12 |
|
| 7 | could [be] [vb pp] by [adv] [adj] | 12 |
|
| 8 | could [be] [verb] by [adv] [adj] | 12 |
|
