| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [prep] | 4108 |
|
| 2 | [been] use [prep] | 1103 |
|
| 3 | [vb past] [been] use | 401 |
|
| 4 | [vb past] use [prep] | 129 |
|
