| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] levels of [noun sg] [noun] | 16 |
|
| 2 | [conj] levels of [noun] [noun sg] | 15 |
|
| 3 | [coord] levels of [noun] [noun] | 12 |
|
| 4 | and levels of [noun] [noun] | 12 |
|
| 5 | and levels of [noun] [noun] | 12 |
|
