| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [vb pp] [prep] [art] [adj] period | 8 |
|
| 2 | [not/n't] [vb pp] within [art] [adj] period | 6 |
|
| 3 | [not/n't] [vb pp] [prep] a [adj] period | 5 |
|
