| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [adv] a | 75 |
|
| 2 | has be [adv] a | 64 |
|
| 3 | has be quite a | 25 |
|
| 4 | has be only a | 13 |
|
| 5 | has be [adv] an | 11 |
|
| 6 | has be both a | 6 |
|
