No | Pattern | Freq | Relations |
---|---|---|---|
1 | but it is [adv] [adv] necessary | 8 | |
2 | but it is not [adv] necessary | 7 | |
3 | but it is [not/n't] [adv] necessary | 7 | |
4 | but it is not [adv] necessary | 6 | |
5 | but it is [adv] necessary [to-vb] | 10 | |
6 | but it is [adv] necessary [verb] | 10 |