| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] for some time | 206 |
|
| 2 | [vb past] for some time | 64 |
|
| 3 | [vb past] [vb pp] for some | 51 |
|
| 4 | [vb past] [vb pp] some time | 36 |
|
