| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a [noun sg] | 37850 |
|
| 2 | could [vb infin] a | 4306 |
|
| 3 | could [vb infin] [noun sg] | 2304 |
|
| 4 | could a [noun sg] | 115 |
|
