| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been trying [to-vb] | 126 |
|
| 2 | have been trying [to-vb] [prep] | 59 |
|
| 3 | [noun] have been [to-vb] [prep] | 57 |
|
| 4 | [noun] have been trying [prep] | 23 |
|
