| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to [be] [adj] | 5461 |
|
| 2 | [verb] to [be] necessary | 117 |
|
| 3 | [vb pp] [prep] [be] necessary | 54 |
|
| 4 | [vb pp] to [be] necessary | 54 |
|
| 5 | [vb pp] [prep] [be] necessary | 54 |
|
| 6 | [vb pp] to [be] necessary | 54 |
|
