| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | maintain [art] [adj] [noun] | 1314 |
|
| 2 | maintain [art] [adj] [noun sg] | 1238 |
|
| 3 | [verb] [art] [adj] level | 970 |
|
| 4 | maintain [art] [adj] level | 50 |
|
