| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [not/n't] necessary for | 61 |
|
| 2 | [coord] it be [not/n't] for | 43 |
|
| 3 | [coord] it be [not/n't] necessary | 26 |
|
| 4 | [coord] it be necessary for | 11 |
|
