SN4 ""

No	Pattern	Freq
1	[conj] it be necessary	432
2	[noun] it be necessary	284
3	[noun sg] it be necessary	197
4	[subord] it be necessary	191
5	[adv] it be necessary	145
6	that it be necessary	135
7	that it be necessary	135
8	[that] it be necessary	135
9	[verb] it be necessary	129
10	[coord] it be necessary	106
11	[adv] it be necessary	95
12	[noun pl] it be necessary	76
13	if it be necessary	60
14	if it be necessary	60
15	and it be necessary	59
16	and it be necessary	59
17	[adj] it be necessary	52
18	but it be necessary	46
19	[Wh adv] it be necessary	46
20	but it be necessary	46
21	think it be necessary	36
22	[vb base] it be necessary	36
23	[vb infin] it be necessary	32
24	where it be necessary	31
25	where it be necessary	31
26	[pron] it be necessary	30
27	why it be necessary	27
28	why it be necessary	27
29	when it be necessary	26
30	when it be necessary	26