| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] be [vb pp] at the time | 14 |
|
| 2 | not be [verb] at the time | 14 |
|
| 3 | [not/n't] been [verb] at the time | 8 |
|
| 4 | [not/n't] be [verb] at the time | 6 |
|
