| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb mod] [to-vb] a [noun sg] | 7 |
|
| 2 | [Wh pn] used [to-vb] a [noun sg] | 7 |
|
| 3 | who [vb mod] [to-vb] a [noun sg] | 7 |
|
