| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [prep] [det] [noun] | 96 |
|
| 2 | [been] involved [prep] [det] [noun] | 38 |
|
| 3 | had [been] involved [prep] [noun] | 34 |
|
| 4 | had [been] involved [prep] [det] | 21 |
|
