| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [noun sg] be used for | 21 |
|
| 2 | this [noun sg] [is] used for | 9 |
|
| 3 | this [noun sg] is used for | 9 |
|
| 4 | this [noun sg] was used for | 8 |
|
| 5 | this [noun sg] [was/were] used for | 8 |
|
