| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] find [pron] | 209 |
|
| 2 | could [not/n't] [verb] i | 147 |
|
| 3 | could [not/n't] [vb infin] i | 147 |
|
| 4 | [modal v] [not/n't] find i | 17 |
|
| 5 | could [adv] find i | 7 |
|
| 6 | could [not/n't] find i | 5 |
|
