| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] been use for | 17 |
|
| 2 | [not/n't] [been] used for | 17 |
|
| 3 | not [been] use for | 12 |
|
| 4 | n't [been] use for | 5 |
|
