| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] | 9783 |
|
| 2 | [modal v] think [prep] | 1559 |
|
| 3 | [vb mod] think [prep] | 1559 |
|
| 4 | could think [prep] | 423 |
|
| 5 | could think [prep] | 423 |
|
