| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] [art] level of | 213 |
|
| 2 | [vb pp] [prep] [det] level of | 37 |
|
| 3 | [prep] [art] [det] level of | 31 |
|
| 4 | [vb pp] [prep] [art] [det] level | 21 |
|
| 5 | [vb pp] [prep] [art] [det] of | 12 |
|
| 6 | [vb pp] [art] [det] level of | 7 |
|
