| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] a [noun sg] | 643 |
|
| 2 | they could [vb infin] a [noun sg] | 135 |
|
| 3 | they could [vb infin] [prep] [noun sg] | 57 |
|
| 4 | they could [vb infin] [prep] a | 52 |
|
| 5 | they [vb infin] [prep] a [noun sg] | 31 |
|
