| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there has been [adv] [det] [noun] | 52 |
|
| 2 | there has been [adv] [adj] research | 8 |
|
| 3 | there [vb -s] been [adv] [det] research | 7 |
|
| 4 | [pron] has been [adv] [det] research | 7 |
|
| 5 | there [verb] been [adv] [det] research | 7 |
|
| 6 | there has be [adv] [det] research | 7 |
|
| 7 | there have been [adv] [det] research | 7 |
|
| 8 | there has [be] [adv] [det] research | 7 |
|
| 9 | there has [been] [adv] [det] research | 7 |
|
| 10 | there has been [adv] [det] research | 7 |
|
| 11 | [ex0] has been [adv] [det] research | 7 |
|
