| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [prep] the same purpose | 10 |
|
| 2 | used for the [det] purpose | 10 |
|
| 3 | used [prep] the [det] purpose | 10 |
|
| 4 | used for the [det] purpose | 10 |
|
| 5 | used [prep] the [det] purpose | 10 |
|
