| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there [verb] been a [noun] | 1245 |
|
| 2 | [verb] been a significant [noun] | 46 |
|
| 3 | there [verb] been a significant | 34 |
|
| 4 | there [verb] been significant [noun] | 24 |
|
