| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] a [noun] | 1907 |
|
| 2 | [Wh det] [vb past] a [noun] | 1213 |
|
| 3 | [Wh det] it [vb past] [noun] | 48 |
|
| 4 | [Wh det] it [vb past] a | 26 |
|
