| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] could [adv] think of a | 5 |
|
| 2 | [coord] could [adv] think of a | 5 |
|
| 3 | [coord] could [adv] [vb infin] of a | 5 |
|
| 4 | [coord] could [not/n't] [verb] of a | 5 |
|
