| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] used for [det] | 35 |
|
| 2 | [not/n't] [been] for [det] | 20 |
|
| 3 | [not/n't] [been] used for | 17 |
|
| 4 | [not/n't] used for [det] | 7 |
|
