| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be necessary for [adj] | 137 |
|
| 2 | be [adj] for such | 84 |
|
| 3 | be necessary for [det] | 72 |
|
| 4 | be necessary [prep] such | 9 |
|
| 5 | [be] necessary for such | 7 |
|
| 6 | be necessary for such | 7 |
|
