| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] [vb past] a long time | 5 |
|
| 2 | [prep] [Wh det] [vb past] a long time | 5 |
|
| 3 | [Wh det] [vb past] a [adv] long time | 5 |
|
| 4 | [Wh det] [vb past] a [adv] long time | 5 |
|
