| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] lead to an improvement | 6 |
|
| 2 | [modal v] lead to an improvement | 6 |
|
| 3 | lead to an improvement [prep] | 5 |
|
| 4 | lead to an improvement in | 5 |
|
| 5 | lead to an improvement [prep] | 5 |
|
| 6 | lead to an improvement in | 5 |
|
