| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] [prep] [det] years | 118 |
|
| 2 | have [been] establish [prep] [det] [noun] | 18 |
|
| 3 | have [been] establish [prep] [det] [noun pl] | 13 |
|
| 4 | have [been] establish [prep] [adj] years | 7 |
|
| 5 | have [been] establish [prep] [det] year | 5 |
|
| 6 | have [be] establish [prep] [det] years | 5 |
|
| 7 | [verb] [been] establish [prep] [det] years | 5 |
|
