| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been a significant [noun] | 30 |
|
| 2 | there have be a significant [noun sg] | 30 |
|
| 3 | there has be a significant [noun] | 24 |
|
| 4 | there have be a significant increase | 6 |
|
| 5 | there have be a significant increase | 6 |
|
