| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is [verb] that [adj] | 825 |
|
| 2 | [pers pn] is necessary [verb] [adj] | 162 |
|
| 3 | [pers pn] is necessary [verb] that | 43 |
|
| 4 | is necessary [verb] that [adj] | 13 |
|
