| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but he could not be [adj] | 11 |
|
| 2 | but he could not be [adj] | 10 |
|
| 3 | but he could not be sure | 7 |
|
| 4 | but he could not be sure | 7 |
|
| 5 | but he could not be [verb] | 6 |
|
| 6 | but he could not be [vb pp] | 6 |
|
