| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is [adj] [verb] [adj] | 2033 |
|
| 2 | [pron] [be] necessary [verb] [adj] | 231 |
|
| 3 | [pron] be necessary [verb] [adj] | 231 |
|
| 4 | [pron] [is] necessary [verb] [adj] | 174 |
|
