| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [verb] chairman | 22 |
|
| 2 | [vb -s] be [verb] chairman | 22 |
|
| 3 | has be [verb] chairman | 22 |
|
| 4 | [vb -s] be [vb pp] chairman | 22 |
|
| 5 | [vb -s] be appoint chairman | 13 |
|
| 6 | [vb -s] be appointed chairman | 13 |
|
