| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] that [adj] [noun pl] | 291 |
|
| 2 | [is] necessary [verb] [adj] [noun pl] | 65 |
|
| 3 | [is] necessary [verb] that [adj] | 13 |
|
| 4 | necessary [verb] that [adj] [noun pl] | 12 |
|
