| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [vb pp] in | 2758 |
|
| 2 | could be [vb pp] in | 995 |
|
| 3 | [adv] could be [vb pp] | 160 |
|
| 4 | [adv] could be in | 5 |
|
