| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they were unable [verb] [pron] [prep] | 5 |
|
| 2 | they [was/were] unable [to-vb] [pron] [prep] | 5 |
|
| 3 | they [was/were] unable [verb] [pron] [prep] | 5 |
|
| 4 | they [was/were] unable [verb] [pron] [prep] | 5 |
|
