| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have be [vb pp] | 2391 |
|
| 2 | could have be [vb pp] | 1057 |
|
| 3 | they could be [vb pp] | 452 |
|
| 4 | they could have [vb pp] | 302 |
|
| 5 | they could have be | 85 |
|
