| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | director of [noun] [coord] [noun] service | 6 |
|
| 2 | director of [noun] and [noun] service | 6 |
|
| 3 | director of [noun] [conj] [noun] service | 6 |
|
| 4 | director of [noun] and [noun] service | 6 |
|
