| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been [prep] [noun] | 235 |
|
| 2 | [noun] have been used [prep] | 139 |
|
| 3 | have been used [prep] [noun] | 69 |
|
| 4 | [noun] been used [prep] [noun] | 7 |
|
