| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] i have been unable | 7 |
|
| 2 | [conj] i have been unable | 5 |
|
| 3 | i have been unable [verb] | 30 |
|
| 4 | i have been unable [to-vb] | 30 |
|
| 5 | i have been unable find | 7 |
|
| 6 | i have been unable to find | 7 |
|
