| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [been] used [prep] [det] | 8 |
|
| 2 | [not/n't] been used [prep] [det] | 8 |
|
| 3 | not [been] used [prep] [det] | 7 |
|
| 4 | [not/n't] [been] used for [det] | 5 |
|
| 5 | [not/n't] [been] used for [det] | 5 |
|
