| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [verb] [adv] [vb pp] | 3386 |
|
| 2 | [verb] [adv] [vb pp] back | 305 |
|
| 3 | [Wh pn] [verb] [vb pp] back | 37 |
|
| 4 | [Wh pn] [verb] [adv] back | 7 |
|
