| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ozone [noun] over the [adj] [noun sg] | 6 |
|
| 2 | ozone [noun] over the [adj] [noun sg] | 6 |
|
| 3 | ozone [noun] over the northern [noun sg] | 5 |
|
| 4 | ozone [noun] over the northern [noun sg] | 5 |
|
