| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | chairman [prep] [noun prp] [noun] | 362 |
|
| 2 | [been] [prep] [noun prp] [noun] | 237 |
|
| 3 | [been] chairman [prep] [noun] | 10 |
|
| 4 | [been] chairman [prep] [noun prp] | 9 |
|
