| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] been established as | 7 |
|
| 2 | have [adv] [been] established as | 7 |
|
| 3 | has [adv] [been] established as | 6 |
|
| 4 | have long [been] established as | 5 |
|
