| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [vb infin] [prep] a [adj] | 399 |
|
| 2 | could [vb infin] [prep] a [adj] | 371 |
|
| 3 | could not [vb infin] [prep] [adj] | 156 |
|
| 4 | could not [vb infin] a [adj] | 126 |
|
| 5 | could not [vb infin] [prep] a | 78 |
|
