| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been [adj] study | 22 |
|
| 2 | [pron] have been [adj] study | 22 |
|
| 3 | there have been [adj] study | 22 |
|
| 4 | [ex0] have been [adj] study | 22 |
|
| 5 | have been [adj] [adj] study | 10 |
|
| 6 | have been [det] [adj] study | 9 |
|
| 7 | have been [art] [adj] study | 5 |
|
| 8 | have been [art] [adj] study | 5 |
|
| 9 | have been [adj] [adj] study | 10 |
|
| 10 | have been [adj] [adj] study | 10 |
|
| 11 | have been [adj] study [prep] | 18 |
|
| 12 | have been [adj] study [prep] | 18 |
|
| 13 | have been [adj] study of | 17 |
|
| 14 | have been [adj] study of | 17 |
|
