| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [adj] for [adj] purposes | 8 |
|
| 2 | [vb mod] [be] [adj] for [adj] purposes | 8 |
|
| 3 | may [be] [adj] for [adj] purposes | 6 |
|
| 4 | may [be] [adj] for [adj] purposes | 6 |
|
