| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [verb] | 15990 |
|
| 2 | could [be] [vb pp] | 15277 |
|
| 3 | [vb mod] [be] found | 2325 |
|
| 4 | [modal v] [be] found | 2325 |
|
| 5 | could [be] find | 294 |
|
| 6 | could [be] found | 292 |
|
