| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] it is necessary [prep] | 13 |
|
| 2 | [verb] that it is necessary [prep] | 11 |
|
| 3 | [verb] that it is necessary [prep] | 11 |
|
| 4 | [verb] [that] it is necessary [prep] | 11 |
|
