| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] could [be] [vb pp] [prep] | 1297 |
|
| 2 | could [be] [vb pp] [prep] [pron] | 358 |
|
| 3 | [noun pl] [be] [vb pp] [prep] [pron] | 18 |
|
| 4 | [noun pl] could [be] [vb pp] [pron] | 15 |
|
