| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been many [noun] [to-vb] | 7 |
|
| 2 | there have been many [noun] [to-vb] | 7 |
|
| 3 | [ex0] have been many [noun] [to-vb] | 7 |
|
| 4 | [pron] have been many [noun pl] [to-vb] | 7 |
|
| 5 | [pron] have been many attempts [to-vb] | 6 |
|
| 6 | [pron] have been many attempt [to-vb] | 6 |
|
