| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been [adj] attempts | 33 |
|
| 2 | [pron] have been [adj] attempts | 33 |
|
| 3 | there have been [adj] attempts | 33 |
|
| 4 | [ex0] have been [adj] attempts | 33 |
|
| 5 | have been [adj] [adj] attempts | 7 |
|
| 6 | have been [det] [adj] attempts | 6 |
|
| 7 | have been [adj] [adj] attempts | 7 |
|
| 8 | have been [adj] [adj] attempts | 7 |
|
| 9 | have been [adj] attempts [to-vb] | 31 |
|
| 10 | have been [adj] attempts [verb] | 31 |
|
