| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [prep] [art] purpose | 25 |
|
| 2 | used for [art] purpose | 25 |
|
| 3 | used for [art] purpose | 25 |
|
| 4 | used [prep] the purpose | 19 |
|
| 5 | used [prep] a purpose | 6 |
|
