| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [prep] | 7113 |
|
| 2 | [noun pl] could be [vb pp] | 2970 |
|
| 3 | [noun pl] be [vb pp] [prep] | 454 |
|
| 4 | [noun pl] could be [prep] | 106 |
|
