| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | improvement in [noun pl] ' [noun] | 14 |
|
| 2 | improvement in [noun pl] ' [noun] | 14 |
|
| 3 | improvement in [noun pl] ' [noun] | 10 |
|
| 4 | improvement in [noun pl] ' [noun sg] | 10 |
|
