| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been trying [to-vb] | 477 |
|
| 2 | have been [to-vb] [prep] | 93 |
|
| 3 | have been trying [prep] | 65 |
|
| 4 | been trying [to-vb] [prep] | 64 |
|
