| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [prep] [adj] | 801 |
|
| 2 | [been] shown [prep] | 449 |
|
| 3 | shown [prep] [adj] | 262 |
|
| 4 | [been] shown [adj] | 6 |
|
