| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] used for [noun] | 206 |
|
| 2 | [verb] [be] used for [noun] | 66 |
|
| 3 | [modal v] [verb] [be] for [noun] | 21 |
|
| 4 | [modal v] [verb] [be] used for | 15 |
|
