| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] trying [verb] for | 15 |
|
| 2 | have [be] trying [to-vb] for | 15 |
|
| 3 | have be trying [verb] for | 15 |
|
| 4 | have been trying [verb] for | 15 |
|
| 5 | had [be] trying [verb] for | 7 |
|
