| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] been [prep] | 1555 |
|
| 2 | been used [prep] | 1086 |
|
| 3 | [vb infin] been used | 190 |
|
| 4 | [vb infin] used [prep] | 17 |
|
