| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] is [conj] | 3317 |
|
| 2 | [adj] is [conj] | 830 |
|
| 3 | necessary [is] [conj] | 10 |
|
| 4 | necessary be [conj] | 10 |
|
| 5 | necessary [be] [conj] | 10 |
|
| 6 | necessary is [conj] | 10 |
|
