| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be used for [det] | 27 |
|
| 2 | have been used for [det] | 27 |
|
| 3 | have [be] used for [det] | 27 |
|
| 4 | have [been] used for [det] | 27 |
|
