| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] [art] | 53658 |
|
| 2 | could be [vb pp] [prep] | 7113 |
|
| 3 | could be [prep] [art] | 254 |
|
| 4 | could be [vb pp] [art] | 190 |
|
