| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been some [noun pl] | 59 |
|
| 2 | there have [been] some [noun pl] | 59 |
|
| 3 | there have [been] some [noun pl] | 45 |
|
| 4 | there had [been] some [noun pl] | 10 |
|
| 5 | there have [been] some changes | 5 |
|
