| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of [noun sg] [prep] [noun] [prep] | 4880 |
|
| 2 | level of [noun] [prep] [noun] [prep] | 91 |
|
| 3 | level [prep] [noun sg] [prep] [noun] [prep] | 87 |
|
| 4 | level of [noun sg] [prep] [noun] [prep] | 83 |
|
