| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [prep] [det] year | 14 |
|
| 2 | [Wh pn] [vb past] [prep] [det] years | 12 |
|
| 3 | [Wh pn] [vb past] for [det] year | 12 |
|
| 4 | [Wh pn] [vb past] [prep] many year | 8 |
|
