| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a public [noun] [noun] [prep] | 70 |
|
| 2 | a [adj] health [noun] [prep] | 58 |
|
| 3 | [art] public health [noun] [prep] | 30 |
|
| 4 | a public health [noun] [prep] | 10 |
|
