No | Pattern | Freq | Relations |
---|---|---|---|
1 | [pers pn] is necessary for [pron] [to-vb] | 25 | |
2 | it is necessary [prep] [pron] [to-vb] | 25 | |
3 | [pers pn] is necessary [prep] [pers pn] [to-vb] | 21 | |
4 | [pers pn] is necessary [prep] we [to-vb] | 9 | |
5 | [pers pn] is necessary [prep] us [to-vb] | 9 |