| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have [been] used [prep] | 11 |
|
| 2 | they have been used [prep] | 11 |
|
| 3 | they have [be] used [prep] | 11 |
|
| 4 | they have be used [prep] | 11 |
|
| 5 | they have [be] used [prep] | 9 |
|
