| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] used for | 2640 |
|
| 2 | [not/n't] [be] used | 693 |
|
| 3 | [not/n't] [be] for | 438 |
|
| 4 | [not/n't] used for | 34 |
|
