| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [vb past] [pers pn] could [verb] | 870 |
|
| 2 | [pers pn] [vb past] [pers pn] [verb] a | 763 |
|
| 3 | [vb past] [pers pn] could [verb] a | 93 |
|
| 4 | [pers pn] [pers pn] could [verb] a | 14 |
|
