| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] [prep] [adj] years | 455 |
|
| 2 | have [been] [vb pp] [prep] [adj] years | 308 |
|
| 3 | have [been] established [prep] [adj] [noun] | 44 |
|
| 4 | have [been] established [prep] [adj] [noun pl] | 23 |
|
| 5 | have [been] established [prep] [adj] year | 7 |
|
| 6 | have [be] established [prep] [adj] years | 7 |
|
| 7 | [verb] [been] established [prep] [adj] years | 7 |
|
| 8 | have [been] establish [prep] [adj] years | 7 |
|
