| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been trying for a | 12 |
|
| 2 | have been trying for a | 12 |
|
| 3 | [vb past] been trying for a | 7 |
|
| 4 | been trying for a [noun] | 8 |
|
| 5 | been trying for a [noun sg] | 8 |
|
