| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [pers pn] have been trying [to-vb] | 12 |
|
| 2 | years [pers pn] have been trying [verb] | 6 |
|
| 3 | [noun pl] [pers pn] had been trying [verb] | 5 |
|
