| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [adv] [vb infin] | 1457 |
|
| 2 | could [pers pn] [adv] [vb infin] | 678 |
|
| 3 | could [pers pn] not [vb infin] | 102 |
|
| 4 | [pers pn] not [adv] [vb infin] | 63 |
|
| 5 | could [pers pn] not [adv] | 11 |
|
