| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] health authorities | 46 |
|
| 2 | [prep] regional health [noun] | 20 |
|
| 3 | [prep] regional health authority | 19 |
|
| 4 | [prep] regional [noun sg] authorities | 18 |
|
| 5 | [prep] regional [noun] authorities | 18 |
|
| 6 | [prep] regional health [noun pl] | 16 |
|
| 7 | [prep] regional health authorities | 15 |
|
