| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [adv] has been [vb pp] | 8 |
|
| 2 | to do [adv] has be [vb pp] | 6 |
|
| 3 | [to-vb] so has be [vb pp] | 6 |
|
