SN4 ""

No	Pattern	Freq
1	it [be] [adv] [verb] and	233
2	it [be] [adv] [verb] and	233
3	it be [adv] [verb] and	233
4	it [be] [adv] [vb pp] and	199
5	it [is] [adv] [verb] and	149
6	it is [adv] [verb] and	109
7	it was [adv] [verb] and	83
8	it [was/were] [adv] [verb] and	83
9	it 's [adv] [verb] and	40
10	it [be] well [verb] and	27
11	it [be] [adv] [v-ing] and	16
12	it [be] [adv] [vb base] and	10
13	it [be] still [verb] and	9
14	it [be] [adv] [to-vb] and	8
15	it [be] now [verb] and	7
16	it [be] all [verb] and	7
17	it [be] [adv] written and	7
18	it [be] [adv] write and	7
19	it [be] just [verb] and	6
20	it [be] easily [verb] and	6
21	it [be] [adv] designed and	5
22	it [be] both [verb] and	5
23	it [be] then [verb] and	5
24	it [be] already [verb] and	5
25	it [be] [adv] try and	5
26	it [be] [adv] built and	5
27	it [be] widely [verb] and	5
28	it [be] completely [verb] and	5
29	it [be] [adv] design and	5
30	it [be] [adv] build and	5