| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] be used for | 203 |
|
| 2 | [verb] [to-vb] be used | 43 |
|
| 3 | [to-vb] be used for | 11 |
|
| 4 | [verb] [to-vb] be for | 8 |
|
