| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] it is [adj] | 1796 |
|
| 2 | [noun] it is necessary | 223 |
|
| 3 | [noun sg] it be necessary | 197 |
|
| 4 | [noun sg] it [be] necessary | 197 |
|
| 5 | [noun sg] [pron] is necessary | 180 |
|
| 6 | [noun sg] it [is] necessary | 154 |
|
| 7 | [noun sg] [pers pn] is necessary | 151 |
|
| 8 | [noun sg] it is necessary | 151 |
|
