| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been little research | 7 |
|
| 2 | have been little research | 7 |
|
| 3 | [verb] been little research | 7 |
|
| 4 | [vb -s] been little research | 7 |
|
| 5 | been [adv] little research | 8 |
|
| 6 | been [adv] little research | 8 |
|
| 7 | been little research [prep] | 5 |
|
| 8 | been little research [prep] | 5 |
|
