| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [verb] a | 17770 |
|
| 2 | [verb] been a | 10333 |
|
| 3 | [vb base] [verb] been | 714 |
|
| 4 | [vb base] been a | 671 |
|
