| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [noun sg] [verb] [prep] a | 932 |
|
| 2 | level of [noun sg] [verb] [prep] | 263 |
|
| 3 | level of [noun sg] [prep] a | 67 |
|
| 4 | level of [noun sg] [verb] a | 17 |
|
