| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been a steady [noun sg] | 40 |
|
| 2 | there have been a steady [noun] | 40 |
|
| 3 | there has been a steady [noun] | 33 |
|
| 4 | there have been a steady increase | 6 |
|
| 5 | there have been a steady increase | 6 |
|
| 6 | there had been a steady [noun] | 5 |
|
