| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been trying for [adj] | 11 |
|
| 2 | have been trying [prep] [num] | 8 |
|
| 3 | has been trying [prep] [adj] | 7 |
|
| 4 | have been trying [prep] [det] | 6 |
|
