| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could be [vb pp] [prep] | 1526 |
|
| 2 | but [pron] could be [vb pp] | 65 |
|
| 3 | but could be [vb pp] [prep] | 19 |
|
| 4 | but [pron] could be [prep] | 8 |
|
