| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of [noun] | 1005805 |
|
| 2 | [noun pl] of [noun] | 207732 |
|
| 3 | level of [noun] | 8873 |
|
| 4 | levels [prep] [noun] | 3439 |
|
| 5 | levels [prep] [noun] | 3439 |
|
| 6 | levels of [noun] | 3100 |
|
