| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] think [prep] a | 40 |
|
| 2 | could [adv] think [prep] a | 40 |
|
| 3 | could [not/n't] think [prep] a | 39 |
|
| 4 | could [adv] think of a | 39 |
|
| 5 | could [adv] think of a | 39 |
|
| 6 | could not think [prep] a | 38 |
|
| 7 | could n't think [prep] a | 25 |
|
| 8 | could not think [prep] a | 13 |
|
