| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [is] not necessary [to-vb] | 175 |
|
| 2 | [pron] [is] necessary [to-vb] that | 47 |
|
| 3 | [pron] [is] not [to-vb] that | 31 |
|
| 4 | [is] not necessary [to-vb] that | 12 |
|
| 5 | [pron] [is] not necessary that | 7 |
|
