| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not be used for | 73 |
|
| 2 | [not/n't] be used for | 62 |
|
| 3 | [not/n't] been used for | 17 |
|
| 4 | n't be used for | 15 |
|
| 5 | [not/n't] being used for | 9 |
|
