| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] unable [to-vb] [art] [n mass] | 9 |
|
| 2 | be unable [to-vb] [art] [n mass] | 9 |
|
| 3 | [was/were] unable [to-vb] [art] [n mass] | 5 |
|
| 4 | unable [to-vb] [art] [n mass] [prep] | 6 |
|
| 5 | unable [to-vb] [art] [n mass] [prep] | 6 |
|
