| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] [vb pp] [to-vb] | 2001 |
|
| 2 | [vb base] [been] [vb pp] at | 342 |
|
| 3 | [vb base] [vb pp] [to-vb] at | 124 |
|
| 4 | [been] [vb pp] [to-vb] at | 64 |
|
