| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] n't [pers pn] [verb] | 1667 |
|
| 2 | [vb past] [pers pn] [verb] back | 261 |
|
| 3 | [vb past] n't [verb] back | 147 |
|
| 4 | n't [pers pn] [verb] back | 49 |
|
