| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [vb pp] | 103100 |
|
| 2 | [verb] [vb pp] a | 43644 |
|
| 3 | [verb] [been] a | 11976 |
|
| 4 | [been] [vb pp] a | 1485 |
|
