| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [been] [prep] | 983 |
|
| 2 | it [not/n't] [prep] | 234 |
|
| 3 | it [not/n't] [been] | 173 |
|
| 4 | it [been] [prep] | 20 |
|
