| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] [prep] a | 1756 |
|
| 2 | [Wh pn] has been [vb pp] [prep] | 154 |
|
| 3 | [Wh pn] has [vb pp] [prep] a | 41 |
|
| 4 | [Wh pn] has been [vb pp] a | 12 |
|
| 5 | [Wh pn] has been [prep] a | 12 |
|
