| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] seen this [noun] | 20 |
|
| 2 | [vb past] seen this [noun sg] | 20 |
|
| 3 | had seen this [noun] | 14 |
|
| 4 | 'd seen this [noun] | 6 |
|
