| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [noun] | 814 |
|
| 2 | [vb -s] been [noun sg] | 610 |
|
| 3 | [verb] been chairman | 31 |
|
| 4 | [vb -s] [been] chairman | 18 |
|
| 5 | [vb -s] [be] chairman | 18 |
|
| 6 | [vb -s] been chairman | 18 |
|
| 7 | [vb -s] be chairman | 18 |
|
