| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before [pers pn] could be [vb pp] [prep] | 16 |
|
| 2 | before it could be [vb pp] [prep] | 7 |
|
| 3 | before it could be [vb pp] [prep] | 7 |
|
| 4 | before they could be [vb pp] [prep] | 5 |
|
| 5 | before they could be [vb pp] [prep] | 5 |
|
