| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] unable [to-vb] [art] [noun] | 269 |
|
| 2 | [was/were] [to-vb] on [art] [noun] | 54 |
|
| 3 | unable [to-vb] on [art] [noun] | 31 |
|
| 4 | [was/were] unable [to-vb] on [art] | 12 |
|
