| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be central | 41 |
|
| 2 | [verb] [been] central | 31 |
|
| 3 | have [be] central | 31 |
|
| 4 | [verb] been central | 31 |
|
| 5 | has [be] central | 18 |
|
| 6 | [vb -s] [be] central | 18 |
|
| 7 | [vb base] [be] central | 12 |
|
| 8 | have [be] central | 10 |
|
| 9 | [vb past] [be] central | 5 |
|
