| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [noun] | 1451 |
|
| 2 | had been [noun sg] | 688 |
|
| 3 | [verb] been chairman | 31 |
|
| 4 | have been chairman | 31 |
|
| 5 | had been chairman | 9 |
|
| 6 | had [been] chairman | 9 |
|
| 7 | [vb past] been chairman | 9 |
|
| 8 | had be chairman | 9 |
|
| 9 | had [be] chairman | 9 |
|
