| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [prep] [adj] | 11817 |
|
| 2 | could [be] [vb pp] [prep] | 7113 |
|
| 3 | could [be] [vb pp] [adj] | 239 |
|
| 4 | could [be] [prep] [adj] | 83 |
|
