| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] established [coord] [verb] | 9 |
|
| 2 | is [adv] established and [verb] | 8 |
|
| 3 | is [adv] established and [verb] | 8 |
|
| 4 | is well established [conj] [verb] | 5 |
|
