| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] many years | 57 |
|
| 2 | [Wh pn] [vb past] [prep] many | 13 |
|
| 3 | [Wh pn] [prep] many years | 8 |
|
| 4 | [Wh pn] [vb past] many years | 7 |
|
