| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] [that] | 9422 |
|
| 2 | is [adj] [that] | 8914 |
|
| 3 | is necessary [conj] | 242 |
|
| 4 | [be] necessary [that] | 53 |
|
| 5 | be necessary [that] | 53 |
|
| 6 | [is] necessary [that] | 43 |
|
| 7 | is necessary [that] | 41 |
|
