| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] n't [been] for [num] year | 5 |
|
| 2 | have n't [been] for [num] year | 5 |
|
| 3 | n't [been] [vb pp] for [num] year | 7 |
|
| 4 | n't [been] [verb] for [num] year | 7 |
|
