| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] this [prep] a | 18 |
|
| 2 | [vb past] [prep] this [prep] a | 18 |
|
| 3 | [vb past] [prep] this [noun sg] a | 16 |
|
| 4 | [vb past] [prep] this [noun] a | 16 |
|
| 5 | [vb past] [prep] this for a | 12 |
|
| 6 | [vb past] [prep] this for a | 12 |
|
