| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] that it [is] necessary [to-vb] | 28 |
|
| 2 | [verb] that it is necessary [to-vb] | 26 |
|
| 3 | [vb infin] that it [is] necessary [to-vb] | 8 |
|
| 4 | [vb -s] that it [is] necessary [to-vb] | 7 |
|
| 5 | [vb base] that it [is] necessary [to-vb] | 6 |
|
| 6 | believe that it [is] necessary [to-vb] | 5 |
|
