| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] [art] period | 13 |
|
| 2 | not [verb] [art] period | 10 |
|
| 3 | not [vb infin] [art] period | 9 |
|
| 4 | not [verb] the period | 8 |
|
| 5 | not [verb] the period | 8 |
|
| 6 | not undertake [art] period | 5 |
|
| 7 | not undertake [art] period | 5 |
|
| 8 | not [verb] a period | 5 |
|
| 9 | not [verb] a period | 5 |
|
