| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] be central to [adj] | 6 |
|
| 2 | [vb base] [be] central to [adj] | 6 |
|
| 3 | [vb base] been central to [adj] | 5 |
|
| 4 | have [be] central to [adj] | 5 |
|
| 5 | [vb base] [been] central to [adj] | 5 |
|
