| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] used [prep] [det] | 101 |
|
| 2 | [not/n't] [been] [prep] [det] | 81 |
|
| 3 | [not/n't] used [prep] [det] | 61 |
|
| 4 | [not/n't] [been] used [prep] | 44 |
|
