| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be used for [det] [noun] | 180 |
|
| 2 | [be] used for [det] [noun] | 180 |
|
| 3 | were [verb] for [det] [noun] | 151 |
|
| 4 | were [vb pp] for [det] [noun] | 124 |
|
| 5 | were used [prep] [det] [noun] | 37 |
|
| 6 | were used [prep] [det] [noun] | 37 |
|
| 7 | were used for [adj] [noun] | 32 |
|
| 8 | [was/were] used for [det] [noun] | 25 |
|
| 9 | were used for [det] [noun] | 10 |
|
| 10 | were use for [det] [noun] | 10 |
|
