| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there [verb] [been] many changes | 7 |
|
| 2 | there have [been] many change | 7 |
|
| 3 | there [verb] been many change | 7 |
|
| 4 | there have [been] many change | 6 |
|
| 5 | there [vb base] [been] many change | 6 |
|
