| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [verb] [prep] a | 5421 |
|
| 2 | has been [verb] [prep] a | 1853 |
|
| 3 | [verb] has been [verb] [prep] | 121 |
|
| 4 | [verb] has [verb] [prep] a | 11 |
|
