| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [prep] | 1621 |
|
| 2 | it is [adv] established | 63 |
|
| 3 | is [adv] established [prep] | 59 |
|
| 4 | it is established [prep] | 11 |
|
