| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] as [art] | 1840 |
|
| 2 | improve [conj] [art] | 78 |
|
| 3 | improve [subord] [art] | 43 |
|
| 4 | improve as [art] | 14 |
|
| 5 | improve as [art] | 14 |
|
