| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] established | 67 |
|
| 2 | it is [adv] established | 63 |
|
| 3 | it [is] well established | 44 |
|
| 4 | it [is] now established | 7 |
|
| 5 | it [is] clearly established | 5 |
|
