SN4 ""

No	Pattern	Freq
1	it be [adv] [verb] and	259
2	it [be] [adv] [verb] and	259
3	it [be] [adv] [verb] and	233
4	it [be] [adv] [vb pp] and	216
5	it [is] [adv] [verb] and	164
6	it is [adv] [verb] and	116
7	it [was/were] [adv] [verb] and	94
8	it was [adv] [verb] and	93
9	it 's [adv] [verb] and	48
10	it [be] well [verb] and	28
11	it [be] well [verb] and	27
12	it [be] [not/n't] [verb] and	24
13	it [be] not [verb] and	24
14	it [be] [adv] [v-ing] and	21
15	it [be] not [verb] and	19
16	it [be] [adv] [vb base] and	12
17	it [be] [adv] [to-vb] and	10
18	it [be] still [verb] and	9
19	it [be] still [verb] and	9
20	it [be] all [verb] and	7
21	it [be] [adv] written and	7
22	it [be] [adv] write and	7
23	it [be] now [verb] and	7
24	it [be] all [verb] and	7
25	it [be] now [verb] and	7
26	it [be] easily [verb] and	6
27	it [be] [adv] designed and	6
28	it [be] just [verb] and	6
29	it [be] easily [verb] and	6
30	it [be] just [verb] and	6