| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been few [noun] | 32 |
|
| 2 | there have been [adj] study | 23 |
|
| 3 | there have been [det] study | 15 |
|
| 4 | [pron] have been few study | 6 |
|
| 5 | there have be few study | 6 |
|
| 6 | there [verb] been few study | 6 |
|
| 7 | there have been few study | 6 |
|
| 8 | there have [be] few study | 6 |
|
| 9 | there have [been] few study | 6 |
|
