| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] was this | 16 |
|
| 2 | [vb past] been this | 13 |
|
| 3 | had be this | 10 |
|
| 4 | [vb past] is this | 7 |
|
| 5 | said be this | 6 |
|
| 6 | happened be this | 6 |
|
