| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] n't been [adv] | 192 |
|
| 2 | [vb base] [adv] been back | 22 |
|
| 3 | [verb] n't been back | 15 |
|
| 4 | [vb base] not been back | 9 |
|
| 5 | [vb base] [not/n't] been back | 9 |
|
| 6 | [vb base] n't [be] back | 7 |
|
| 7 | [vb base] n't be back | 7 |
|
| 8 | [vb base] n't [been] back | 6 |
|
