| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] a [adj] [noun sg] | 40 |
|
| 2 | been used [prep] a [adj] [noun] | 40 |
|
| 3 | been used [prep] a [adj] [noun] | 38 |
|
| 4 | been used as a [adj] [noun] | 21 |
|
| 5 | been used in a [adj] [noun] | 6 |
|
| 6 | been used for a [adj] [noun] | 6 |
|
| 7 | been used [prep] a wide [noun] | 5 |
|
| 8 | been used [prep] a wide [noun] | 5 |
|
