| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are used [prep] this [noun] | 17 |
|
| 2 | are used [prep] this [noun sg] | 17 |
|
| 3 | are used in this [noun] | 10 |
|
| 4 | are used for this [noun] | 6 |
|
