| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] necessary [to-vb] [art] | 325 |
|
| 2 | that it [is] necessary [to-vb] | 45 |
|
| 3 | that it [is] [to-vb] [art] | 8 |
|
| 4 | that [is] necessary [to-vb] [art] | 6 |
|
