No | Pattern | Freq | Relations |
---|---|---|---|
1 | [vb pp] to [be] necessary | 54 | |
2 | [vb pp] [prep] be necessary | 54 | |
3 | [vb pp] [prep] [be] necessary | 54 | |
4 | [vb pp] [prep] [be] necessary | 54 | |
5 | [vb pp] to [be] necessary | 54 | |
6 | shown [prep] [be] necessary | 9 | |
7 | thought [prep] [be] necessary | 8 | |
8 | found [prep] [be] necessary | 5 |