| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb -s] at [art] high level | 5 |
|
| 2 | [vb -s] [verb] at [art] high level | 5 |
|
| 3 | [vb -s] at [art] high level [prep] | 5 |
|
| 4 | [vb -s] at [art] high level [prep] | 5 |
|
