| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are used for [det] [noun sg] | 8 |
|
| 2 | are used for this [noun] | 6 |
|
| 3 | are used for [det] purpose | 6 |
|
| 4 | are used for [det] [noun pl] | 6 |
|
