| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] [prep] a | 6770 |
|
| 2 | 's been [vb pp] [prep] | 621 |
|
| 3 | 's [vb pp] [prep] a | 167 |
|
| 4 | 's been [prep] a | 59 |
|
| 5 | 's been [vb pp] a | 26 |
|
