| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] used [adv] [prep] [adj] purposes | 6 |
|
| 2 | [be] used [adv] [prep] [adj] purposes | 6 |
|
| 3 | be used [adv] [prep] [adj] purposes | 6 |
|
| 4 | [be] used [adv] for [adj] purposes | 6 |
|
