| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [vb pp] at [art] | 152 |
|
| 2 | has be [vb pp] at [art] | 145 |
|
| 3 | [vb -s] be [vb pp] at the | 116 |
|
| 4 | [vb -s] be [vb pp] at a | 33 |
|
| 5 | 's be [vb pp] at [art] | 7 |
|
| 6 | [vb -s] be developed at [art] | 5 |
|
