| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] a [num ord] | 20 |
|
| 2 | could [vb infin] a [num ord] | 20 |
|
| 3 | could [vb infin] a second | 9 |
|
| 4 | could [vb infin] a third | 5 |
|
