| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been used for [adj] | 61 |
|
| 2 | have [adv] been used for | 43 |
|
| 3 | have [adv] been for [adj] | 28 |
|
| 4 | [adv] been used for [adj] | 19 |
|
