| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [vb past] [pers pn] could do | 74 |
|
| 2 | [vb past] [pers pn] could do [det] | 14 |
|
| 3 | [pers pn] [vb past] [pers pn] do [det] | 7 |
|
