| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] some improvement | 7 |
|
| 2 | [verb] [been] some improvement | 7 |
|
| 3 | has [been] some improvement | 6 |
|
| 4 | [vb -s] [been] some improvement | 6 |
|
| 5 | [been] some improvement [prep] | 5 |
|
| 6 | [been] some improvement in | 5 |
|
| 7 | [been] some improvement in | 5 |
|
| 8 | [been] some improvement [prep] | 5 |
|
