SN4 ""

No	Pattern	Freq
1	it be [adj] and [verb]	235
2	it [be] [adj] and [verb]	235
3	it [be] [adj] and [verb]	226
4	it [is] [adj] and [verb]	125
5	it [was/were] [adj] and [verb]	109
6	it was [adj] and [verb]	104
7	it is [adj] and [verb]	81
8	it [be] [adj] and [vb past]	74
9	it [be] [adj] and [vb -s]	65
10	it 's [adj] and [verb]	44
11	it [be] [adj] and [v-ing]	42
12	it [be] [adj] and [vb base]	25
13	it [be] [adj] and [vb pp]	25
14	it [be] [adj] and have	24
15	it [be] [adj] and has	13
16	it [be] [adj] and do	11
17	it [be] [adj] and had	11
18	it [be] [adj] and make	8
19	it [be] [adj -er] and [verb]	8
20	it [be] [adj] and does	6
21	it were [adj] and [verb]	5
22	it [be] dark and [verb]	5
23	it [be] dark and [verb]	5
24	it [be] [adj] and rain	5
25	it [be] small and [verb]	5