| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] chairman of | 20 |
|
| 2 | [verb] been [vb pp] chairman of | 20 |
|
| 3 | [vb -s] been [vb pp] chairman of | 17 |
|
| 4 | has been [vb pp] chairman of | 17 |
|
| 5 | been [vb pp] chairman of [art] | 18 |
|
| 6 | been [vb pp] chairman of [art] | 18 |
|
| 7 | been [vb pp] chairman of the | 17 |
|
| 8 | been [vb pp] chairman of the | 17 |
|
