| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it is [adj] | 3526 |
|
| 2 | [conj] it is necessary | 263 |
|
| 3 | [coord] it [be] necessary | 106 |
|
| 4 | [coord] it be necessary | 106 |
|
| 5 | [coord] it [is] necessary | 77 |
|
| 6 | [coord] [pron] is necessary | 71 |
|
| 7 | [coord] [pers pn] is necessary | 68 |
|
| 8 | [coord] it is necessary | 68 |
|
