| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [vb infin] for a long time | 6 |
|
| 2 | [not/n't] [vb infin] [prep] a long time | 6 |
|
| 3 | [not/n't] [vb infin] for a long time | 6 |
|
