| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh det] for many years | 6 |
|
| 2 | [Wh det] for many years [verb] | 11 |
|
| 3 | [Wh det] for many years [vb past] | 7 |
|
| 4 | [Wh det] for many years have | 5 |
|
