| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adj] for [adj] [noun sg] | 514 |
|
| 2 | [be] necessary for [adj] [noun sg] | 68 |
|
| 3 | [is] necessary [prep] [adj] [noun sg] | 44 |
|
| 4 | [is] necessary for [adj] [noun] | 40 |
|
