| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been many change | 8 |
|
| 2 | [verb] [been] many changes | 8 |
|
| 3 | have [been] many change | 8 |
|
| 4 | [vb base] [been] many change | 7 |
|
| 5 | have [been] many change | 7 |
|
