| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been several | 112 |
|
| 2 | there [verb] been several | 112 |
|
| 3 | there [vb base] been several | 81 |
|
| 4 | there have been several | 79 |
|
| 5 | there had been several | 30 |
|
| 6 | there [vb past] been several | 30 |
|
