| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been established [prep] [det] [noun pl] | 13 |
|
| 2 | have been establish [prep] [det] [noun pl] | 13 |
|
| 3 | [vb base] been establish [prep] [det] [noun pl] | 6 |
|
| 4 | have been establish [prep] [det] [noun pl] | 6 |
|
| 5 | [vb -s] been establish [prep] [det] [noun pl] | 6 |
|
| 6 | [verb] been establish for [det] [noun pl] | 6 |
|
| 7 | [verb] been establish [prep] many [noun pl] | 5 |
|
| 8 | has been establish [prep] [det] [noun pl] | 5 |
|
| 9 | [verb] been establish [prep] [det] years | 5 |
|
