| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [be] used for [adj] | 194 |
|
| 2 | [be] used for [adj] purpose | 129 |
|
| 3 | [noun] [be] for [adj] purpose | 18 |
|
| 4 | [noun] used for [adj] purpose | 16 |
|
