| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been used for [noun sg] | 39 |
|
| 2 | have been used for [det] | 27 |
|
| 3 | have been for [det] [noun sg] | 26 |
|
| 4 | been used for [det] [noun sg] | 12 |
|
