| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [adv] [vb infin] [noun sg] | 20 |
|
| 2 | they could [adv] [vb infin] [noun pl] | 9 |
|
| 3 | they could [adv] [vb infin] [noun prp] | 7 |
|
| 4 | they could only [vb infin] [noun] | 5 |
|
