| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been used [prep] [noun] | 81 |
|
| 2 | [vb -s] been [prep] [num] [noun] | 18 |
|
| 3 | been used [prep] [num] [noun] | 16 |
|
| 4 | [vb -s] been used [prep] [num] | 10 |
|
