| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it was [adv] necessary for | 9 |
|
| 2 | that it was not necessary for | 6 |
|
| 3 | that it was [not/n't] necessary for | 6 |
|
| 4 | that it was not necessary for | 6 |
|
