| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [prep] [adj] | 1750 |
|
| 2 | have been established [prep] | 282 |
|
| 3 | been established [prep] [adj] | 85 |
|
| 4 | have been established [adj] | 11 |
|
| 5 | have established [prep] [adj] | 6 |
|
