| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not sleep at | 24 |
|
| 2 | [vb mod] n't sleep at | 16 |
|
| 3 | ca not sleep at | 11 |
|
| 4 | [vb mod] not sleep at | 8 |
|
| 5 | could not sleep at | 8 |
|
