| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] what used | 11 |
|
| 2 | be what used | 11 |
|
| 3 | [be] what used | 11 |
|
| 4 | [is] what used | 10 |
|
| 5 | is what used | 6 |
|
