| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] used for [det] purpose | 56 |
|
| 2 | [be] used for the purpose | 14 |
|
| 3 | [be] used for the [det] | 12 |
|
| 4 | used for the [det] purpose | 10 |
|
