| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] a [noun] | 1212 |
|
| 2 | used [verb] a [noun] | 278 |
|
| 3 | been used [verb] [noun] | 115 |
|
| 4 | been used [verb] a | 42 |
|
