| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been significant changes | 6 |
|
| 2 | [verb] been significant changes | 6 |
|
| 3 | been significant changes [prep] | 6 |
|
| 4 | been significant changes [prep] | 6 |
|
| 5 | been significant changes in | 5 |
|
| 6 | been significant changes in | 5 |
|
