| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] for [art] purpose [prep] | 5 |
|
| 2 | [Wh pn] for [art] purpose of | 5 |
|
| 3 | [Wh pn] for [art] purpose [prep] | 5 |
|
| 4 | [Wh pn] for [art] purpose of | 5 |
|
