| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [conj] [adj] | 2428 |
|
| 2 | is [conj] [adj] | 286 |
|
| 3 | be [conj] necessary | 9 |
|
| 4 | [be] [conj] necessary | 9 |
|
| 5 | is [conj] necessary | 6 |
|
| 6 | [is] [conj] necessary | 6 |
|
