| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not been [verb] | 4977 |
|
| 2 | not been [vb pp] | 4437 |
|
| 3 | not [be] treated | 126 |
|
| 4 | not be treated | 126 |
|
| 5 | [adv] been treated | 58 |
|
| 6 | not been treat | 18 |
|
| 7 | not [been] treated | 17 |
|
