| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been chairman | 31 |
|
| 2 | have been chairman | 31 |
|
| 3 | has been chairman | 18 |
|
| 4 | [vb -s] been chairman | 18 |
|
| 5 | [vb past] been chairman | 9 |
|
| 6 | had been chairman | 9 |
|
| 7 | been [verb] chairman | 31 |
|
| 8 | been [vb pp] chairman | 30 |
|
| 9 | been appoint chairman | 16 |
|
| 10 | been appointed chairman | 16 |
|
| 11 | been elected chairman | 9 |
|
| 12 | been elect chairman | 9 |
|
| 13 | been chairman [prep] | 33 |
|
| 14 | been chairman [prep] | 33 |
|
| 15 | been chairman of | 29 |
|
| 16 | been chairman of | 29 |
|
